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From toddlers to preteens, girls appreciate having the perfect outfit. Whether the girls in your life are princesses or sports stars, thredUP has a nice selection of clothes to meet their preferences. Clothes don't grow™, your kids do—shop today to find amazing items at up to 90% off estimated retail!

NylonRemove filter12-18 moRemove filter
75 items
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    Ruffle Butts One Piece Swimsuit (view 2)Ruffle Butts One Piece Swimsuit (view 1)
    View Product: Ruffle Butts One Piece Swimsuit

    Ruffle Butts

    One Piece Swimsuit
    Size 12-18 mo
    $8.99
    18% off estimated retail
    Janie and Jack Dress (view 2)Janie and Jack Dress (view 1)
    View Product: Janie and Jack Dress

    Janie and Jack

    Dress
    Size 12-18 mo
    $19.99
    68% off estimated retail
    Janie and Jack Cardigan (view 2)Janie and Jack Cardigan (view 1)
    View Product: Janie and Jack Cardigan

    Janie and Jack

    Cardigan
    Size 12-18 mo
    $17.99
    65% off estimated retail
    Tea Rash Guard (view 2)Tea Rash Guard (view 1)
    View Product: Tea Rash Guard

    Tea

    Rash Guard
    Size 12-18 mo
    $13.99
    55% off estimated retail
    The Edit. Forever Classic, Get perfectly polished in trousers, blazers, and more. Shop The Edit
    Zara Pullover Sweater (view 2)Zara Pullover Sweater (view 1)
    View Product: Zara Pullover Sweater

    Zara

    Pullover Sweater
    Size 12-18 mo
    $19.99 $14.99 25% off with code HOTDEAL
    52% off estimated retail
    JoJo Maman Bebe Pullover Sweater (view 2)JoJo Maman Bebe Pullover Sweater (view 1)
    View Product: JoJo Maman Bebe Pullover Sweater

    JoJo Maman Bebe

    Pullover Sweater
    Size 12-18 mo
    $16.99 $12.74 25% off with code HOTDEAL
    74% off estimated retail
    Tea Casual Pants (view 2)Tea Casual Pants (view 1)
    View Product: Tea Casual Pants

    Tea

    Casual Pants
    Size 12-18 mo
    $22.99 $18.39 20% off with code HOTDEAL
    47% off estimated retail
    Janie and Jack Two Piece Swimsuit (view 2)Janie and Jack Two Piece Swimsuit (view 1)
    View Product: Janie and Jack Two Piece Swimsuit

    Janie and Jack

    Two Piece Swimsuit
    Size 12-18 mo
    $24.99 $16.24 35% off with code HOTDEAL
    40% off estimated retail
    Old Navy Long Sleeve Outfit (view 2)Old Navy Long Sleeve Outfit (view 1)
    View Product: Old Navy Long Sleeve Outfit

    Old Navy

    Long Sleeve Outfit
    Size 12-18 mo
    $7.99 $6.39 20% off with code HOTDEAL
    56% off estimated retail
    Janie and Jack Sweatpants (view 2)Janie and Jack Sweatpants (view 1)
    View Product: Janie and Jack Sweatpants

    Janie and Jack

    Sweatpants
    Size 12-18 mo
    $15.99 $12.79 20% off with code HOTDEAL
    46% off estimated retail
    Baby Gap One Piece Snowsuit (view 2)Baby Gap One Piece Snowsuit (view 1)
    View Product: Baby Gap One Piece Snowsuit

    Baby Gap

    One Piece Snowsuit
    Size 12-18 mo
    $43.99 $32.99 25% off with code HOTDEAL
    61% off estimated retail
    Janie and Jack Turtleneck Sweater (view 2)Janie and Jack Turtleneck Sweater (view 1)
    View Product: Janie and Jack Turtleneck Sweater

    Janie and Jack

    Turtleneck Sweater
    Size 12-18 mo
    $17.99 $13.49 25% off with code HOTDEAL
    66% off estimated retail
    Janie and Jack Pullover Sweater (view 2)Janie and Jack Pullover Sweater (view 1)
    View Product: Janie and Jack Pullover Sweater

    Janie and Jack

    Pullover Sweater
    Size 12-18 mo
    $17.99 $12.59 30% off with code HOTDEAL
    64% off estimated retail
    Janie and Jack Special Occasion Dress (view 2)Janie and Jack Special Occasion Dress (view 1)
    View Product: Janie and Jack Special Occasion Dress

    Janie and Jack

    Special Occasion Dress
    Size 12-18 mo
    $60.99 $42.69 30% off with code HOTDEAL
    75% off estimated retail
    Bloomies Baby Casual Pants (view 2)Bloomies Baby Casual Pants (view 1)
    View Product: Bloomies Baby Casual Pants

    Bloomies Baby

    Casual Pants
    Size 12-18 mo
    $11.99 $9.59 20% off with code HOTDEAL
    26% off estimated retail
    Bloomies Baby Pullover Sweater (view 2)Bloomies Baby Pullover Sweater (view 1)
    View Product: Bloomies Baby Pullover Sweater

    Bloomies Baby

    Pullover Sweater
    Size 12-18 mo
    $12.99 $10.39 20% off with code HOTDEAL
    33% off estimated retail
    Old Navy Jacket (view 2)Old Navy Jacket (view 1)
    View Product: Old Navy Jacket

    Old Navy

    Jacket
    Size 12-18 mo
    $15.99 $11.99 25% off with code HOTDEAL
    53% off estimated retail
    Hanna Andersson Shorts (view 2)Hanna Andersson Shorts (view 1)
    View Product: Hanna Andersson Shorts

    Hanna Andersson

    Shorts
    Size 12-18 mo
    $11.99 $7.79 35% off with code HOTDEAL
    42% off estimated retail
    Janie and Jack Rash Guard (view 2)Janie and Jack Rash Guard (view 1)
    View Product: Janie and Jack Rash Guard

    Janie and Jack

    Rash Guard
    Size 12-18 mo
    $10.99 $8.79 20% off with code HOTDEAL
    71% off estimated retail
    Made With Love Dress (view 2)Made With Love Dress (view 1)
    View Product: Made With Love Dress

    Made With Love

    Dress
    Size 12-18 mo
    $9.99 $7.99 20% off with code HOTDEAL
    75% off estimated retail
    Janie and Jack Pullover Sweater (view 2)Janie and Jack Pullover Sweater (view 1)
    View Product: Janie and Jack Pullover Sweater

    Janie and Jack

    Pullover Sweater
    Size 12-18 mo
    $17.99 $12.59 30% off with code HOTDEAL
    64% off estimated retail
    Janie and Jack Cardigan (view 2)Janie and Jack Cardigan (view 1)
    View Product: Janie and Jack Cardigan

    Janie and Jack

    Cardigan
    Size 12-18 mo
    $17.99 $12.59 30% off with code HOTDEAL
    71% off estimated retail
    BAILEY'S BLOSSOMS Overall Dress (view 2)BAILEY'S BLOSSOMS Overall Dress (view 1)
    View Product: BAILEY'S BLOSSOMS Overall Dress

    BAILEY'S BLOSSOMS

    Overall Dress
    Size 12-18 mo
    $18.99 $14.24 25% off with code HOTDEAL
    37% off estimated retail
    Monsoon Special Occasion Dress (view 2)Monsoon Special Occasion Dress (view 1)
    View Product: Monsoon Special Occasion Dress

    Monsoon

    Special Occasion Dress
    Size 12-18 mo
    $9.99 $7.99 20% off with code HOTDEAL
    75% off estimated retail
    Janie and Jack Pullover Sweater (view 2)Janie and Jack Pullover Sweater (view 1)
    View Product: Janie and Jack Pullover Sweater

    Janie and Jack

    Pullover Sweater
    Size 12-18 mo
    $17.99 $12.59 30% off with code HOTDEAL
    64% off estimated retail
    Zara Pullover Sweater (view 2)Zara Pullover Sweater (view 1)
    View Product: Zara Pullover Sweater

    Zara

    Pullover Sweater
    Size 12-18 mo
    $17.99 $10.79 40% off with code HOTDEAL
    58% off estimated retail
    Baby Gap Outlet Short Sleeve Onesie (view 2)Baby Gap Outlet Short Sleeve Onesie (view 1)
    View Product: Baby Gap Outlet Short Sleeve Onesie

    Baby Gap Outlet

    Short Sleeve Onesie
    Size 12-18 mo
    $7.99 $6.39 20% off with code HOTDEAL
    $7
    Baby Gap Snow Jacket (view 2)Baby Gap Snow Jacket (view 1)
    View Product: Baby Gap Snow Jacket

    Baby Gap

    Snow Jacket
    Size 12-18 mo
    $38.99 $27.29 30% off with code HOTDEAL
    56% off estimated retail
    Janie and Jack Cardigan (view 2)Janie and Jack Cardigan (view 1)
    View Product: Janie and Jack Cardigan

    Janie and Jack

    Cardigan
    Size 12-18 mo
    $21.99 $14.29 35% off with code HOTDEAL
    65% off estimated retail
    Baby Gap Coat (view 2)Baby Gap Coat (view 1)
    View Product: Baby Gap Coat

    Baby Gap

    Coat
    Size 12-18 mo
    $33.99 $23.79 30% off with code HOTDEAL
    61% off estimated retail
    Baby Gap One Piece Swimsuit (view 2)Baby Gap One Piece Swimsuit (view 1)
    View Product: Baby Gap One Piece Swimsuit

    Baby Gap

    One Piece Swimsuit
    Size 12-18 mo
    $13.99 $11.19 20% off with code HOTDEAL
    55% off estimated retail
    Baby Gap One Piece Swimsuit (view 2)Baby Gap One Piece Swimsuit (view 1)
    View Product: Baby Gap One Piece Swimsuit

    Baby Gap

    One Piece Swimsuit
    Size 12-18 mo
    $12.99 $10.39 20% off with code HOTDEAL
    59% off estimated retail
    Janie and Jack Dress (view 2)Janie and Jack Dress (view 1)
    View Product: Janie and Jack Dress

    Janie and Jack

    Dress
    Size 12-18 mo
    $19.99 $13.99 30% off with code HOTDEAL
    69% off estimated retail
    Baby Gap Shorts (view 2)Baby Gap Shorts (view 1)
    View Product: Baby Gap Shorts

    Baby Gap

    Shorts
    Size 12-18 mo
    $10.99 $8.79 20% off with code HOTDEAL
    52% off estimated retail
    Janie and Jack Cardigan (view 2)Janie and Jack Cardigan (view 1)
    View Product: Janie and Jack Cardigan

    Janie and Jack

    Cardigan
    Size 12-18 mo
    $20.99 $13.64 35% off with code HOTDEAL
    67% off estimated retail
    Roller Rabbit One Piece Swimsuit (view 2)Roller Rabbit One Piece Swimsuit (view 1)
    View Product: Roller Rabbit One Piece Swimsuit

    Roller Rabbit

    One Piece Swimsuit
    Size 12-18 mo
    $28.99 $21.74 25% off with code HOTDEAL
    45% off estimated retail
    Janie and Jack Pullover Sweater (view 2)Janie and Jack Pullover Sweater (view 1)Flawed Gem
    View Product: Janie and Jack Pullover Sweater

    Janie and Jack

    Pullover Sweater
    Size 12-18 mo
    $13.99 $9.79 30% off with code HOTDEAL
    66% off estimated retail
    Baby Gap One Piece Swimsuit (view 2)Baby Gap One Piece Swimsuit (view 1)
    View Product: Baby Gap One Piece Swimsuit

    Baby Gap

    One Piece Swimsuit
    Size 12-18 mo
    $12.99 $10.39 20% off with code HOTDEAL
    59% off estimated retail
    Baby Gap Vest (view 2)Baby Gap Vest (view 1)
    View Product: Baby Gap Vest

    Baby Gap

    Vest
    Size 12-18 mo
    $20.99 $15.74 25% off with code HOTDEAL
    60% off estimated retail
    Baby Gap Vest (view 2)Baby Gap Vest (view 1)Price Drop
    View Product: Baby Gap Vest

    Baby Gap

    Vest
    Size 12-18 mo
    $17.99 $14.39 20% off with code HOTDEAL
    74% off estimated retail
    Ruffle Butts Tank Top (view 2)Ruffle Butts Tank Top (view 1)
    View Product: Ruffle Butts Tank Top

    Ruffle Butts

    Tank Top
    Size 12-18 mo
    $6.99 $5.59 20% off with code HOTDEAL
    14% off estimated retail
    Old Navy One Piece Swimsuit (view 2)Old Navy One Piece Swimsuit (view 1)Price Drop
    View Product: Old Navy One Piece Swimsuit

    Old Navy

    One Piece Swimsuit
    Size 12-18 mo
    $8.99 $5.84 35% off with code HOTDEAL
    55% off estimated retail
    Baby Gap Pullover Sweater (view 2)Baby Gap Pullover Sweater (view 1)Price Drop
    View Product: Baby Gap Pullover Sweater

    Baby Gap

    Pullover Sweater
    Size 12-18 mo
    $18.99 $10.44 45% off with code HOTDEAL
    56% off estimated retail
    Baby Gap One Piece Swimsuit (view 2)Baby Gap One Piece Swimsuit (view 1)Price Drop
    View Product: Baby Gap One Piece Swimsuit

    Baby Gap

    One Piece Swimsuit
    Size 12-18 mo
    $8.99 $5.84 35% off with code HOTDEAL
    70% off estimated retail
    Janie and Jack Rash Guard (view 2)Janie and Jack Rash Guard (view 1)Price Drop
    View Product: Janie and Jack Rash Guard

    Janie and Jack

    Rash Guard
    Size 12-18 mo
    $12.99 $8.44 35% off with code HOTDEAL
    64% off estimated retail
    Janie and Jack Special Occasion Dress (view 2)Janie and Jack Special Occasion Dress (view 1)Price Drop
    View Product: Janie and Jack Special Occasion Dress

    Janie and Jack

    Special Occasion Dress
    Size 12-18 mo
    $66.99 $30.15 55% off with code HOTDEAL
    73% off estimated retail
    Gymboree One Piece Swimsuit (view 2)Gymboree One Piece Swimsuit (view 1)Price Drop
    View Product: Gymboree One Piece Swimsuit

    Gymboree

    One Piece Swimsuit
    Size 12-18 mo
    $21.99 $13.19 40% off with code HOTDEAL
    33% off estimated retail
    Baby Gap Shorts (view 2)Baby Gap Shorts (view 1)
    View Product: Baby Gap Shorts

    Baby Gap

    Shorts
    Size 12-18 mo
    $9.99 $6.49 35% off with code HOTDEAL
    57% off estimated retail
    Gymboree Dress (view 2)Gymboree Dress (view 1)Price Drop
    View Product: Gymboree Dress

    Gymboree

    Dress
    Size 12-18 mo
    $12.99 $8.44 35% off with code HOTDEAL
    68% off estimated retail
    Splendid Pullover Sweater (view 2)Splendid Pullover Sweater (view 1)Price Drop
    View Product: Splendid Pullover Sweater

    Splendid

    Pullover Sweater
    Size 12-18 mo
    $17.99 $9.00 50% off with code HOTDEAL
    70% off estimated retail
    Old Navy Bucket Hat (view 1)
    View Product: Old Navy Bucket Hat

    Old Navy

    Bucket Hat
    Size 12-18 mo
    $8.99 $5.39 40% off with code HOTDEAL
    27% off estimated retail
    Janie and Jack Dress (view 2)Janie and Jack Dress (view 1)Price Drop
    View Product: Janie and Jack Dress

    Janie and Jack

    Dress
    Size 12-18 mo
    $14.99 $8.24 45% off with code HOTDEAL
    79% off estimated retail
    Old Navy One Piece Swimsuit (view 2)Old Navy One Piece Swimsuit (view 1)Price Drop
    View Product: Old Navy One Piece Swimsuit

    Old Navy

    One Piece Swimsuit
    Size 12-18 mo
    $11.99 $7.19 40% off with code HOTDEAL
    38% off estimated retail
    Baby Gap Pullover Sweater (view 2)Baby Gap Pullover Sweater (view 1)Price Drop
    View Product: Baby Gap Pullover Sweater

    Baby Gap

    Pullover Sweater
    Size 12-18 mo
    $12.24 $6.73 45% off with code HOTDEAL
    73% off estimated retail
    Ruffle Butts Shorts (view 2)Ruffle Butts Shorts (view 1)Price Drop
    View Product: Ruffle Butts Shorts

    Ruffle Butts

    Shorts
    Size 12-18 mo
    $7.99 $4.79 40% off with code HOTDEAL
    $7
    Monsoon Short Sleeve Outfit (view 2)Monsoon Short Sleeve Outfit (view 1)Price Drop
    View Product: Monsoon Short Sleeve Outfit

    Monsoon

    Short Sleeve Outfit
    Size 12-18 mo
    $12.99 $5.20 60% off with code HOTDEAL
    13% off estimated retail
    Janie and Jack Rash Guard (view 2)Janie and Jack Rash Guard (view 1)Price Drop
    View Product: Janie and Jack Rash Guard

    Janie and Jack

    Rash Guard
    Size 12-18 mo
    $7.99 $4.79 40% off with code HOTDEAL
    77% off estimated retail
    Old Navy Two Piece Swimsuit (view 2)Old Navy Two Piece Swimsuit (view 1)Price Drop
    View Product: Old Navy Two Piece Swimsuit

    Old Navy

    Two Piece Swimsuit
    Size 12-18 mo
    $10.99 $6.59 40% off with code HOTDEAL
    44% off estimated retail
    Baby Gap Outlet One Piece Swimsuit (view 2)Baby Gap Outlet One Piece Swimsuit (view 1)Price Drop
    View Product: Baby Gap Outlet One Piece Swimsuit

    Baby Gap Outlet

    One Piece Swimsuit
    Size 12-18 mo
    $11.99 $7.19 40% off with code HOTDEAL
    $11
    Snapper Rock Rash Guard (view 2)Snapper Rock Rash Guard (view 1)Price Drop
    View Product: Snapper Rock Rash Guard

    Snapper Rock

    Rash Guard
    Size 12-18 mo
    $11.99 $7.19 40% off with code HOTDEAL
    37% off estimated retail
    Janie and Jack Rash Guard (view 2)Janie and Jack Rash Guard (view 1)Price Drop
    View Product: Janie and Jack Rash Guard

    Janie and Jack

    Rash Guard
    Size 12-18 mo
    $11.99 $7.19 40% off with code HOTDEAL
    67% off estimated retail
    Rockets of Awesome Skirt (view 2)Rockets of Awesome Skirt (view 1)Price Drop
    View Product: Rockets of Awesome Skirt

    Rockets of Awesome

    Skirt
    Size 12-18 mo
    $10.99 $6.59 40% off with code HOTDEAL
    59% off estimated retail
    Baby Gap One Piece Swimsuit (view 2)Baby Gap One Piece Swimsuit (view 1)Price Drop
    View Product: Baby Gap One Piece Swimsuit

    Baby Gap

    One Piece Swimsuit
    Size 12-18 mo
    $11.24 $6.74 40% off with code HOTDEAL
    66% off estimated retail
    Assorted Brands One Piece Swimsuit (view 2)Assorted Brands One Piece Swimsuit (view 1)Price Drop
    View Product: Assorted Brands One Piece Swimsuit

    Assorted Brands

    One Piece Swimsuit
    Size 12-18 mo
    $11.24 $6.74 40% off with code HOTDEAL
    59% off estimated retail
    Koala Kids One Piece Swimsuit (view 2)Koala Kids One Piece Swimsuit (view 1)Price Drop
    View Product: Koala Kids One Piece Swimsuit

    Koala Kids

    One Piece Swimsuit
    Size 12-18 mo
    $10.99 $6.59 40% off with code HOTDEAL
    10% off estimated retail
    The Children's Place One Piece Swimsuit (view 2)The Children's Place One Piece Swimsuit (view 1)Price Drop
    View Product: The Children's Place One Piece Swimsuit

    The Children's Place

    One Piece Swimsuit
    Size 12-18 mo
    $10.99 $6.59 40% off with code HOTDEAL
    50% off estimated retail
    Old Navy Two Piece Swimsuit (view 2)Old Navy Two Piece Swimsuit (view 1)New With Tags
    View Product: Old Navy Two Piece Swimsuit

    Old Navy

    Two Piece Swimsuit
    Size 12-18 mo
    $9.99 $5.99 40% off with code HOTDEAL
    28% off estimated retail
    Andee Lew Short Sleeve Onesie (view 2)Andee Lew Short Sleeve Onesie (view 1)Price Drop
    View Product: Andee Lew Short Sleeve Onesie

    Andee Lew

    Short Sleeve Onesie
    Size 12-18 mo
    $9.99 $5.99 40% off with code HOTDEAL
    50% off estimated retail
    Andee Lew Long Sleeve Onesie (view 2)Andee Lew Long Sleeve Onesie (view 1)Price Drop
    View Product: Andee Lew Long Sleeve Onesie

    Andee Lew

    Long Sleeve Onesie
    Size 12-18 mo
    $9.99 $5.99 40% off with code HOTDEAL
    66% off estimated retail
    Gymboree Sleeveless Blouse (view 2)Gymboree Sleeveless Blouse (view 1)Price Drop
    View Product: Gymboree Sleeveless Blouse

    Gymboree

    Sleeveless Blouse
    Size 12-18 mo
    $9.24 $5.54 40% off with code HOTDEAL
    70% off estimated retail
    Old Navy One Piece Swimsuit (view 2)Old Navy One Piece Swimsuit (view 1)Price Drop
    View Product: Old Navy One Piece Swimsuit

    Old Navy

    One Piece Swimsuit
    Size 12-18 mo
    $12.24 $7.34 40% off with code HOTDEAL
    50% off estimated retail
    Old Navy One Piece Swimsuit (view 2)Old Navy One Piece Swimsuit (view 1)Price Drop
    View Product: Old Navy One Piece Swimsuit

    Old Navy

    One Piece Swimsuit
    Size 12-18 mo
    $11.24 $6.74 40% off with code HOTDEAL
    47% off estimated retail
    Floatimini One Piece Swimsuit (view 2)Floatimini One Piece Swimsuit (view 1)Price Drop
    View Product: Floatimini One Piece Swimsuit

    Floatimini

    One Piece Swimsuit
    Size 12-18 mo
    $8.24 $4.94 40% off with code HOTDEAL
    86% off estimated retail
    Unbranded One Piece Swimsuit (view 2)Unbranded One Piece Swimsuit (view 1)Price Drop
    View Product: Unbranded One Piece Swimsuit

    Unbranded

    One Piece Swimsuit
    Size 12-18 mo
    $8.99 $5.39 40% off with code HOTDEAL
    60% off estimated retail
    Old Navy Outlet One Piece Swimsuit (view 2)Old Navy Outlet One Piece Swimsuit (view 1)Price Drop
    View Product: Old Navy Outlet One Piece Swimsuit

    Old Navy Outlet

    One Piece Swimsuit
    Size 12-18 mo
    $8.99 $5.39 40% off with code HOTDEAL
    20% off estimated retail
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