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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!

12-18 moRemove filter6XRemove filterIn Someone's CartRemove filter
2,918 items
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    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 $4.94 45% off with code GOBIG
    47% off estimated retail
    Sofi Pullover Sweater (view 2)Sofi Pullover Sweater (view 1)
    View Product: Sofi Pullover Sweater

    Sofi

    Pullover Sweater
    Size 12-18 mo
    $6.99 $3.84 45% off with code GOBIG
    83% off estimated retail
    Btween Dress (view 2)Btween Dress (view 1)
    View Product: Btween Dress

    Btween

    Dress
    Size 6X
    $6.99 $3.84 45% off with code GOBIG
    77% off estimated retail
    LA Made Kids Leggings (view 2)LA Made Kids Leggings (view 1)Price Drop
    View Product: LA Made Kids Leggings

    LA Made Kids

    Leggings
    Size 6X
    $8.99 $4.94 45% off with code GOBIG
    71% off estimated retail
    The Edit. Forever Classic, Get perfectly polished in trousers, blazers, and more. Shop The Edit
    Genuine Kids from Oshkosh Faux Fur Vest (view 2)Genuine Kids from Oshkosh Faux Fur Vest (view 1)Price Drop
    View Product: Genuine Kids from Oshkosh Faux Fur Vest

    Genuine Kids from Oshkosh

    Faux Fur Vest
    Size 12-18 mo
    $8.99 $4.94 45% off with code GOBIG
    43% off estimated retail
    Mud Pie Dress (view 2)Mud Pie Dress (view 1)Price Drop
    View Product: Mud Pie Dress

    Mud Pie

    Dress
    Size 12-18 mo
    $8.99 $4.94 45% off with code GOBIG
    66% off estimated retail
    Bella Baby Short Sleeve Onesie (view 2)Bella Baby Short Sleeve Onesie (view 1)
    View Product: Bella Baby Short Sleeve Onesie

    Bella Baby

    Short Sleeve Onesie
    Size 12-18 mo
    $8.99 $4.94 45% off with code GOBIG
    10% off estimated retail
    Gymboree Denim Shorts (view 2)Gymboree Denim Shorts (view 1)Price Drop
    View Product: Gymboree Denim Shorts

    Gymboree

    Denim Shorts
    Size 12-18 mo
    $8.99 $4.94 45% off with code GOBIG
    64% off estimated retail
    OshKosh B'gosh Shorts (view 2)OshKosh B'gosh Shorts (view 1)Price Drop
    View Product: OshKosh B'gosh Shorts

    OshKosh B'gosh

    Shorts
    Size 12-18 mo
    $8.99 $4.94 45% off with code GOBIG
    43% off estimated retail
    Jumping Beans Dress (view 2)Jumping Beans Dress (view 1)
    View Product: Jumping Beans Dress

    Jumping Beans

    Dress
    Size 6X
    $8.99 $4.94 45% off with code GOBIG
    62% off estimated retail
    Baby Gap Shorts (view 2)Baby Gap Shorts (view 1)Price Drop
    View Product: Baby Gap Shorts

    Baby Gap

    Shorts
    Size 12-18 mo
    $8.99 $4.94 45% off with code GOBIG
    55% off estimated retail
    Baby Gap Shorts (view 2)Baby Gap Shorts (view 1)Price Drop
    View Product: Baby Gap Shorts

    Baby Gap

    Shorts
    Size 12-18 mo
    $8.99 $4.94 45% off with code GOBIG
    55% off estimated retail
    The Children's Place Short Sleeve T-Shirt (view 2)The Children's Place Short Sleeve T-Shirt (view 1)Price Drop
    View Product: The Children's Place Short Sleeve T-Shirt

    The Children's Place

    Short Sleeve T-Shirt
    Size 12-18 mo
    $6.99 $3.84 45% off with code GOBIG
    46% off estimated retail
    Splendid Tank Top (view 2)Splendid Tank Top (view 1)
    View Product: Splendid Tank Top

    Splendid

    Tank Top
    Size 6X
    $8.99 $4.94 45% off with code GOBIG
    71% off estimated retail
    Gymboree Shorts (view 2)Gymboree Shorts (view 1)Price Drop
    View Product: Gymboree Shorts

    Gymboree

    Shorts
    Size 12-18 mo
    $7.99 $4.39 45% off with code GOBIG
    63% off estimated retail
    Gymboree Denim Shorts (view 2)Gymboree Denim Shorts (view 1)
    View Product: Gymboree Denim Shorts

    Gymboree

    Denim Shorts
    Size 12-18 mo
    $8.99 $4.94 45% off with code GOBIG
    64% off estimated retail
    Old Navy Shorts (view 2)Old Navy Shorts (view 1)
    View Product: Old Navy Shorts

    Old Navy

    Shorts
    Size 12-18 mo
    $8.99 $4.94 45% off with code GOBIG
    30% off estimated retail
    Origany Leggings (view 2)Origany Leggings (view 1)Price Drop
    View Product: Origany Leggings

    Origany

    Leggings
    Size 12-18 mo
    $8.99 $4.94 45% off with code GOBIG
    55% off estimated retail
    Splendid Shorts (view 2)Splendid Shorts (view 1)
    View Product: Splendid Shorts

    Splendid

    Shorts
    Size 6X
    $6.99 $3.84 45% off with code GOBIG
    77% off estimated retail
    Old Navy Zip Up Hoodie (view 2)Old Navy Zip Up Hoodie (view 1)Price Drop
    View Product: Old Navy Zip Up Hoodie

    Old Navy

    Zip Up Hoodie
    Size 12-18 mo
    $6.99 $3.84 45% off with code GOBIG
    58% off estimated retail
    Unbranded One Piece Swimsuit (view 2)Unbranded One Piece Swimsuit (view 1)
    View Product: Unbranded One Piece Swimsuit

    Unbranded

    One Piece Swimsuit
    Size 12-18 mo
    $6.99 $3.84 45% off with code GOBIG
    65% off estimated retail
    TOBY Faux Fur Vest (view 2)TOBY Faux Fur Vest (view 1)Price Drop
    View Product: TOBY Faux Fur Vest

    TOBY

    Faux Fur Vest
    Size 12-18 mo
    $9.99 $5.49 45% off with code GOBIG
    41% off estimated retail
    Early Days Shorts (view 2)Early Days Shorts (view 1)Price Drop
    View Product: Early Days Shorts

    Early Days

    Shorts
    Size 12-18 mo
    $6.99 $3.84 45% off with code GOBIG
    $7
    Marc & Maddie Cardigan (view 2)Marc & Maddie Cardigan (view 1)
    View Product: Marc & Maddie Cardigan

    Marc & Maddie

    Cardigan
    Size 12-18 mo
    $6.99 $3.84 45% off with code GOBIG
    79% off estimated retail
    Habitual Girl Leggings (view 2)Habitual Girl Leggings (view 1)Price Drop
    View Product: Habitual Girl Leggings

    Habitual Girl

    Leggings
    Size 6X
    $8.99 $4.94 45% off with code GOBIG
    71% off estimated retail
    Truluv Denim Skirt (view 2)Truluv Denim Skirt (view 1)
    View Product: Truluv Denim Skirt

    Truluv

    Denim Skirt
    Size 6X
    $8.99 $4.94 45% off with code GOBIG
    71% off estimated retail
    Zara Baby Shorts (view 2)Zara Baby Shorts (view 1)
    View Product: Zara Baby Shorts

    Zara Baby

    Shorts
    Size 12-18 mo
    $8.99 $4.94 45% off with code GOBIG
    35% off estimated retail
    NK Too Dress (view 2)NK Too Dress (view 1)Price Drop
    View Product: NK Too Dress

    NK Too

    Dress
    Size 12-18 mo
    $8.99 $4.94 45% off with code GOBIG
    66% off estimated retail
    Assorted Brands Khaki Shorts (view 2)Assorted Brands Khaki Shorts (view 1)
    View Product: Assorted Brands Khaki Shorts

    Assorted Brands

    Khaki Shorts
    Size 6X
    $8.99 $4.94 45% off with code GOBIG
    71% off estimated retail
    Juicy Couture Dress (view 2)Juicy Couture Dress (view 1)Rare Find
    View Product: Juicy Couture Dress

    Juicy Couture

    Dress
    Size 12-18 mo
    $6.99 $3.84 45% off with code GOBIG
    94% off estimated retail
    Old Navy Shorts (view 2)Old Navy Shorts (view 1)
    View Product: Old Navy Shorts

    Old Navy

    Shorts
    Size 12-18 mo
    $6.99 $3.84 45% off with code GOBIG
    46% 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
    $6.99 $3.84 45% off with code GOBIG
    86% off estimated retail
    Mikey Stars Tank Top (view 2)Mikey Stars Tank Top (view 1)
    View Product: Mikey Stars Tank Top

    Mikey Stars

    Tank Top
    Size 12-18 mo
    $6.99 $3.84 45% off with code GOBIG
    65% 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
    $7.99 $4.39 45% off with code GOBIG
    60% off estimated retail
    Old Navy Shorts (view 2)Old Navy Shorts (view 1)Price Drop
    View Product: Old Navy Shorts

    Old Navy

    Shorts
    Size 12-18 mo
    $7.99 $4.39 45% off with code GOBIG
    38% off estimated retail
    Puma Active T-Shirt (view 2)Puma Active T-Shirt (view 1)Price Drop
    View Product: Puma Active T-Shirt

    Puma

    Active T-Shirt
    Size 12-18 mo
    $7.99 $4.39 45% off with code GOBIG
    60% off estimated retail
    Joe Fresh Dress (view 2)Joe Fresh Dress (view 1)
    View Product: Joe Fresh Dress

    Joe Fresh

    Dress
    Size 12-18 mo
    $6.99 $3.84 45% off with code GOBIG
    65% off estimated retail
    Baby Gap Cardigan (view 2)Baby Gap Cardigan (view 1)Price Drop
    View Product: Baby Gap Cardigan

    Baby Gap

    Cardigan
    Size 12-18 mo
    $7.99 $4.39 45% off with code GOBIG
    70% off estimated retail
    American Apparel Short Sleeve Onesie (view 2)American Apparel Short Sleeve Onesie (view 1)Price Drop
    View Product: American Apparel Short Sleeve Onesie

    American Apparel

    Short Sleeve Onesie
    Size 12-18 mo
    $7.99 $4.39 45% off with code GOBIG
    42% off estimated retail
    Extremely Me Leggings (view 2)Extremely Me Leggings (view 1)Price Drop
    View Product: Extremely Me Leggings

    Extremely Me

    Leggings
    Size 6X
    $7.99 $4.39 45% off with code GOBIG
    20% off estimated retail
    Pony Tails Skirt (view 2)Pony Tails Skirt (view 1)
    View Product: Pony Tails Skirt

    Pony Tails

    Skirt
    Size 6X
    $12.99 $7.14 45% off with code GOBIG
    43% off estimated retail
    Unbranded Leggings (view 2)Unbranded Leggings (view 1)Price Drop
    View Product: Unbranded Leggings

    Unbranded

    Leggings
    Size 12-18 mo
    $7.99 $4.39 45% off with code GOBIG
    42% off estimated retail
    Old Navy Dress (view 2)Old Navy Dress (view 1)Price Drop
    View Product: Old Navy Dress

    Old Navy

    Dress
    Size 12-18 mo
    $7.99 $4.39 45% off with code GOBIG
    60% off estimated retail
    Old Navy Zip Up Hoodie (view 2)Old Navy Zip Up Hoodie (view 1)Price Drop
    View Product: Old Navy Zip Up Hoodie

    Old Navy

    Zip Up Hoodie
    Size 12-18 mo
    $7.99 $4.39 45% off with code GOBIG
    53% off estimated retail
    Baby Gap Cardigan (view 2)Baby Gap Cardigan (view 1)Price Drop
    View Product: Baby Gap Cardigan

    Baby Gap

    Cardigan
    Size 12-18 mo
    $7.99 $4.39 45% off with code GOBIG
    70% off estimated retail
    Old Navy Dress (view 2)Old Navy Dress (view 1)Price Drop
    View Product: Old Navy Dress

    Old Navy

    Dress
    Size 12-18 mo
    $7.99 $4.39 45% off with code GOBIG
    60% off estimated retail
    Assorted Brands Short Sleeve Blouse (view 2)Assorted Brands Short Sleeve Blouse (view 1)Price Drop
    View Product: Assorted Brands Short Sleeve Blouse

    Assorted Brands

    Short Sleeve Blouse
    Size 12-18 mo
    $7.99 $4.39 45% off with code GOBIG
    60% off estimated retail
    Baby Gap Cardigan (view 2)Baby Gap Cardigan (view 1)Price Drop
    View Product: Baby Gap Cardigan

    Baby Gap

    Cardigan
    Size 12-18 mo
    $7.99 $4.39 45% off with code GOBIG
    70% off estimated retail
    H&M Sleeveless Blouse (view 2)H&M Sleeveless Blouse (view 1)
    View Product: H&M Sleeveless Blouse

    H&M

    Sleeveless Blouse
    Size 12-18 mo
    $6.99 $3.84 45% off with code GOBIG
    53% off estimated retail
    Rare Editions Casual Pants (view 2)Rare Editions Casual Pants (view 1)Price Drop
    View Product: Rare Editions Casual Pants

    Rare Editions

    Casual Pants
    Size 6X
    $7.99 $4.39 45% off with code GOBIG
    80% off estimated retail
    Unbranded Casual Pants (view 2)Unbranded Casual Pants (view 1)Price Drop
    View Product: Unbranded Casual Pants

    Unbranded

    Casual Pants
    Size 12-18 mo
    $7.99 $4.39 45% off with code GOBIG
    70% off estimated retail
    Baby Gap Skort (view 2)Baby Gap Skort (view 1)Price Drop
    View Product: Baby Gap Skort

    Baby Gap

    Skort
    Size 12-18 mo
    $7.99 $4.39 45% off with code GOBIG
    68% off estimated retail
    Baby Gap Beanie (view 2)Baby Gap Beanie (view 1)Price Drop
    View Product: Baby Gap Beanie

    Baby Gap

    Beanie
    Size 12-18 mo
    $7.99 $4.39 45% off with code GOBIG
    53% 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
    $7.99 $4.39 45% off with code GOBIG
    20% off estimated retail
    Assorted Brands Long Sleeve Top (view 2)Assorted Brands Long Sleeve Top (view 1)Price Drop
    View Product: Assorted Brands Long Sleeve Top

    Assorted Brands

    Long Sleeve Top
    Size 12-18 mo
    $7.99 $4.39 45% off with code GOBIG
    60% off estimated retail
    Old Navy Dress (view 2)Old Navy Dress (view 1)Price Drop
    View Product: Old Navy Dress

    Old Navy

    Dress
    Size 12-18 mo
    $7.99 $4.39 45% off with code GOBIG
    60% off estimated retail
    Majestic Short Sleeve Jersey (view 2)Majestic Short Sleeve Jersey (view 1)
    View Product: Majestic Short Sleeve Jersey

    Majestic

    Short Sleeve Jersey
    Size 6X
    $6.99 $3.84 45% off with code GOBIG
    65% off estimated retail
    Gymboree Pullover Hoodie (view 2)Gymboree Pullover Hoodie (view 1)Price Drop
    View Product: Gymboree Pullover Hoodie

    Gymboree

    Pullover Hoodie
    Size 12-18 mo
    $7.99 $4.39 45% off with code GOBIG
    75% off estimated retail
    Gymboree Sleeveless Top (view 2)Gymboree Sleeveless Top (view 1)
    View Product: Gymboree Sleeveless Top

    Gymboree

    Sleeveless Top
    Size 12-18 mo
    $6.99 $3.84 45% off with code GOBIG
    63% off estimated retail
    Baby Gap Cargo Shorts (view 2)Baby Gap Cargo Shorts (view 1)Price Drop
    View Product: Baby Gap Cargo Shorts

    Baby Gap

    Cargo Shorts
    Size 12-18 mo
    $7.99 $4.39 45% off with code GOBIG
    60% off estimated retail
    Old Navy Outlet Dress (view 2)Old Navy Outlet Dress (view 1)
    View Product: Old Navy Outlet Dress

    Old Navy Outlet

    Dress
    Size 12-18 mo
    $9.99 $5.49 45% off with code GOBIG
    28% off estimated retail
    M&S Short Sleeve Onesie (view 2)M&S Short Sleeve Onesie (view 1)Price Drop
    View Product: M&S Short Sleeve Onesie

    M&S

    Short Sleeve Onesie
    Size 12-18 mo
    $7.99 $4.39 45% off with code GOBIG
    42% off estimated retail
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