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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 filterKid Shoe Size 10½Remove filterKid Shoe Size 9Remove filter
40 items
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    Baby Gap Short Sleeve Onesie (view 2)Baby Gap Short Sleeve Onesie (view 1)Flawed Gem
    View Product: Baby Gap Short Sleeve Onesie

    Baby Gap

    Short Sleeve Onesie
    Size 12-18 mo
    $6.99 $3.84 45% off with code GOBIG
    62% off estimated retail
    Baby Boden Long Sleeve Onesie (view 2)Baby Boden Long Sleeve Onesie (view 1)Flawed Gem
    View Product: Baby Boden Long Sleeve Onesie

    Baby Boden

    Long Sleeve Onesie
    Size 12-18 mo
    $11.99 $6.59 45% off with code GOBIG
    44% off estimated retail
    Baby Gap Dress (view 2)Baby Gap Dress (view 1)Flawed Gem
    View Product: Baby Gap Dress

    Baby Gap

    Dress
    Size 12-18 mo
    $12.99 $7.14 45% off with code GOBIG
    64% off estimated retail
    Baby Gap Short Sleeve Outfit (view 2)Baby Gap Short Sleeve Outfit (view 1)Flawed Gem
    View Product: Baby Gap Short Sleeve Outfit

    Baby Gap

    Short Sleeve Outfit
    Size 12-18 mo
    $7.99 $4.39 45% off with code GOBIG
    56% off estimated retail
    The Edit. Forever Classic, Get perfectly polished in trousers, blazers, and more. Shop The Edit
    Baby Gap Short Sleeve Top (view 2)Baby Gap Short Sleeve Top (view 1)Flawed Gem
    View Product: Baby Gap Short Sleeve Top

    Baby Gap

    Short Sleeve Top
    Size 12-18 mo
    $9.99 $5.49 45% off with code GOBIG
    63% off estimated retail
    Zara Long Sleeve Top (view 2)Zara Long Sleeve Top (view 1)Flawed Gem
    View Product: Zara Long Sleeve Top

    Zara

    Long Sleeve Top
    Size 12-18 mo
    $9.99 $5.49 45% off with code GOBIG
    69% off estimated retail
    TOMS Flats (view 2)TOMS Flats (view 1)Flawed Gem
    View Product: TOMS Flats

    TOMS

    Flats
    Size 9
    $21.99 $12.09 45% off with code GOBIG
    44% off estimated retail
    Zara Denim Shorts (view 2)Zara Denim Shorts (view 1)Flawed Gem
    View Product: Zara Denim Shorts

    Zara

    Denim Shorts
    Size 12-18 mo
    $11.99 $6.59 45% off with code GOBIG
    54% off estimated retail
    Gymboree Sweatshirt (view 2)Gymboree Sweatshirt (view 1)Flawed Gem
    View Product: Gymboree Sweatshirt

    Gymboree

    Sweatshirt
    Size 12-18 mo
    $8.99 $4.94 45% off with code GOBIG
    75% off estimated retail
    Gymboree Special Occasion Dress (view 2)Gymboree Special Occasion Dress (view 1)Flawed Gem
    View Product: Gymboree Special Occasion Dress

    Gymboree

    Special Occasion Dress
    Size 12-18 mo
    $15.99 $8.79 45% off with code GOBIG
    62% off estimated retail
    Baby Gap Pullover Sweater (view 2)Baby Gap Pullover Sweater (view 1)Flawed Gem
    View Product: Baby Gap Pullover Sweater

    Baby Gap

    Pullover Sweater
    Size 12-18 mo
    $17.99 $9.89 45% off with code GOBIG
    59% off estimated retail
    Baby Gap Dress (view 2)Baby Gap Dress (view 1)Flawed Gem
    View Product: Baby Gap Dress

    Baby Gap

    Dress
    Size 12-18 mo
    $15.99 $8.79 45% off with code GOBIG
    59% off estimated retail
    Baby Gap Long Sleeve Onesie (view 2)Baby Gap Long Sleeve Onesie (view 1)Flawed Gem
    View Product: Baby Gap Long Sleeve Onesie

    Baby Gap

    Long Sleeve Onesie
    Size 12-18 mo
    $8.99 $4.94 45% off with code GOBIG
    50% off estimated retail
    Gymboree Dress (view 2)Gymboree Dress (view 1)Flawed Gem
    View Product: Gymboree Dress

    Gymboree

    Dress
    Size 12-18 mo
    $15.99 $8.79 45% off with code GOBIG
    62% off estimated retail
    Gymboree Long Sleeve Onesie (view 2)Gymboree Long Sleeve Onesie (view 1)Flawed Gem
    View Product: Gymboree Long Sleeve Onesie

    Gymboree

    Long Sleeve Onesie
    Size 12-18 mo
    $11.99 $6.59 45% off with code GOBIG
    60% off estimated retail
    The North Face One Piece Snowsuit (view 2)The North Face One Piece Snowsuit (view 1)Flawed Gem
    View Product: The North Face One Piece Snowsuit

    The North Face

    One Piece Snowsuit
    Size 12-18 mo
    $39.99 $21.99 45% off with code GOBIG
    31% off estimated retail
    Baby Gap Long Sleeve Top (view 2)Baby Gap Long Sleeve Top (view 1)Flawed Gem
    View Product: Baby Gap Long Sleeve Top

    Baby Gap

    Long Sleeve Top
    Size 12-18 mo
    $16.99 $9.34 45% off with code GOBIG
    54% off estimated retail
    Lulus Sweatpants (view 2)Lulus Sweatpants (view 1)Flawed Gem
    View Product: Lulus Sweatpants

    Lulus

    Sweatpants
    Size 12-18 mo
    $16.99 $9.34 45% off with code GOBIG
    57% off estimated retail
    Kate Quinn Organics Cords (view 2)Kate Quinn Organics Cords (view 1)Flawed Gem
    View Product: Kate Quinn Organics Cords

    Kate Quinn Organics

    Cords
    Size 12-18 mo
    $14.99 $8.24 45% off with code GOBIG
    48% off estimated retail
    Zara Shorts (view 2)Zara Shorts (view 1)Flawed Gem
    View Product: Zara Shorts

    Zara

    Shorts
    Size 12-18 mo
    $8.99 $4.94 45% off with code GOBIG
    40% off estimated retail
    Tommy Bahama Sneakers (view 2)Tommy Bahama Sneakers (view 1)Flawed Gem
    View Product: Tommy Bahama Sneakers

    Tommy Bahama

    Sneakers
    Size 9
    $15.99 $8.79 45% off with code GOBIG
    64% off estimated retail
    Skechers Sneakers (view 2)Skechers Sneakers (view 1)Flawed Gem
    View Product: Skechers Sneakers

    Skechers

    Sneakers
    Size 9
    $18.99 $10.44 45% off with code GOBIG
    57% off estimated retail
    Splendid Short Sleeve T-Shirt (view 2)Splendid Short Sleeve T-Shirt (view 1)Flawed Gem
    View Product: Splendid Short Sleeve T-Shirt

    Splendid

    Short Sleeve T-Shirt
    Size 12-18 mo
    $11.99 $6.59 45% off with code GOBIG
    54% off estimated retail
    Janie and Jack Dress (view 2)Janie and Jack Dress (view 1)Flawed Gem
    View Product: Janie and Jack Dress

    Janie and Jack

    Dress
    Size 12-18 mo
    $20.99 $11.54 45% off with code GOBIG
    73% off estimated retail
    Baby Gap Shorts (view 2)Baby Gap Shorts (view 1)Flawed Gem
    View Product: Baby Gap Shorts

    Baby Gap

    Shorts
    Size 12-18 mo
    $12.99 $7.14 45% off with code GOBIG
    38% off estimated retail
    Stuart Weitzman Flats (view 2)Stuart Weitzman Flats (view 1)Flawed Gem
    View Product: Stuart Weitzman Flats

    Stuart Weitzman

    Flats
    Size 9
    $22.99 $12.64 45% off with code GOBIG
    58% off estimated retail
    Janie and Jack Short Sleeve Onesie (view 2)Janie and Jack Short Sleeve Onesie (view 1)Flawed Gem
    View Product: Janie and Jack Short Sleeve Onesie

    Janie and Jack

    Short Sleeve Onesie
    Size 12-18 mo
    $19.99 $10.99 45% off with code GOBIG
    68% off estimated retail
    MICHAEL Michael Kors Boots (view 2)MICHAEL Michael Kors Boots (view 1)Flawed Gem
    View Product: MICHAEL Michael Kors Boots

    MICHAEL Michael Kors

    Boots
    Size 9
    $17.99 $9.89 45% off with code GOBIG
    73% off estimated retail
    Micaela Greg Pullover Sweater (view 2)Micaela Greg Pullover Sweater (view 1)Flawed Gem
    View Product: Micaela Greg Pullover Sweater

    Micaela Greg

    Pullover Sweater
    Size 12-18 mo
    $18.99 $10.44 45% off with code GOBIG
    78% off estimated retail
    Original K-OS Jacket (view 2)Original K-OS Jacket (view 1)Flawed Gem
    View Product: Original K-OS Jacket

    Original K-OS

    Jacket
    Size 12-18 mo
    $12.99 $7.14 45% off with code GOBIG
    47% off estimated retail
    Baby Gap Dress (view 2)Baby Gap Dress (view 1)Flawed Gem
    View Product: Baby Gap Dress

    Baby Gap

    Dress
    Size 12-18 mo
    $15.99 $8.79 45% off with code GOBIG
    59% off estimated retail
    Splendid Shorts (view 2)Splendid Shorts (view 1)Flawed Gem
    View Product: Splendid Shorts

    Splendid

    Shorts
    Size 12-18 mo
    $6.99 $3.84 45% off with code GOBIG
    72% off estimated retail
    Gymboree Khakis (view 2)Gymboree Khakis (view 1)Flawed Gem
    View Product: Gymboree Khakis

    Gymboree

    Khakis
    Size 12-18 mo
    $6.99 $3.84 45% off with code GOBIG
    78% off estimated retail
    Janie and Jack Dress (view 2)Janie and Jack Dress (view 1)Flawed Gem
    View Product: Janie and Jack Dress

    Janie and Jack

    Dress
    Size 12-18 mo
    $20.99 $11.54 45% off with code GOBIG
    73% off estimated retail
    Janie and Jack Short Sleeve Top (view 2)Janie and Jack Short Sleeve Top (view 1)Flawed Gem
    View Product: Janie and Jack Short Sleeve Top

    Janie and Jack

    Short Sleeve Top
    Size 12-18 mo
    $8.99 $4.94 45% off with code GOBIG
    70% off estimated retail
    Gymboree Short Sleeve Outfit (view 2)Gymboree Short Sleeve Outfit (view 1)Flawed Gem
    View Product: Gymboree Short Sleeve Outfit

    Gymboree

    Short Sleeve Outfit
    Size 12-18 mo
    $12.99 $7.14 45% off with code GOBIG
    56% off estimated retail
    Janie and Jack Leggings (view 2)Janie and Jack Leggings (view 1)Flawed Gem
    View Product: Janie and Jack Leggings

    Janie and Jack

    Leggings
    Size 12-18 mo
    $12.99 $7.14 45% off with code GOBIG
    66% 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 $7.69 45% off with code GOBIG
    66% off estimated retail
    Baby Gap Fleece Jacket (view 2)Baby Gap Fleece Jacket (view 1)Flawed Gem
    View Product: Baby Gap Fleece Jacket

    Baby Gap

    Fleece Jacket
    Size 12-18 mo
    $17.99 $9.89 45% off with code GOBIG
    59% off estimated retail
    Cat & Jack Boots (view 2)Cat & Jack Boots (view 1)Flawed Gem
    View Product: Cat & Jack Boots

    Cat & Jack

    Boots
    Size 9
    $17.99 $9.89 45% off with code GOBIG
    39% off estimated retail
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