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From leggings for toddlers on the go to casual pants for active girls to bottoms for special occasions, you'll find all the styles your girls need here. Shop thredUP for like-new girls' pants in every size and save up to 90% off store prices.

12-18 moRemove filter
25 items
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    Monica + Andy Sweatpants (view 2)Monica + Andy Sweatpants (view 1)
    View Product: Monica + Andy Sweatpants

    Monica + Andy

    Sweatpants
    Size 12-18 mo
    $12.99
    40% off estimated retail
    Emerson and Friends Sweatpants (view 2)Emerson and Friends Sweatpants (view 1)
    View Product: Emerson and Friends Sweatpants

    Emerson and Friends

    Sweatpants
    Size 12-18 mo
    $10.99
    66% off estimated retail
    Columbia One Piece Snowsuit (view 2)Columbia One Piece Snowsuit (view 1)
    View Product: Columbia One Piece Snowsuit

    Columbia

    One Piece Snowsuit
    Size 12-18 mo
    $18.99
    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 THANKU
    46% off estimated retail
    The Edit. Forever Classic, Get perfectly polished in trousers, blazers, and more. Shop The Edit
    Baby Boden Sweatpants (view 2)Baby Boden Sweatpants (view 1)
    View Product: Baby Boden Sweatpants

    Baby Boden

    Sweatpants
    Size 12-18 mo
    $10.99 $8.79 20% off with code THANKU
    59% 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
    $35.99 $26.99 25% off with code THANKU
    61% off estimated retail
    Monica + Andy Sweatpants (view 2)Monica + Andy Sweatpants (view 1)
    View Product: Monica + Andy Sweatpants

    Monica + Andy

    Sweatpants
    Size 12-18 mo
    $12.99 $10.39 20% off with code THANKU
    40% off estimated retail
    Zara Sweatpants (view 2)Zara Sweatpants (view 1)
    View Product: Zara Sweatpants

    Zara

    Sweatpants
    Size 12-18 mo
    $9.99 $7.99 20% off with code THANKU
    54% off estimated retail
    Zara Sweatpants (view 2)Zara Sweatpants (view 1)
    View Product: Zara Sweatpants

    Zara

    Sweatpants
    Size 12-18 mo
    $11.99 $9.59 20% off with code THANKU
    45% off estimated retail
    Baby Gap Sweatpants (view 2)Baby Gap Sweatpants (view 1)
    View Product: Baby Gap Sweatpants

    Baby Gap

    Sweatpants
    Size 12-18 mo
    $5.99 $4.79 20% off with code THANKU
    62% off estimated retail
    Hanna Andersson Sweatpants (view 2)Hanna Andersson Sweatpants (view 1)
    View Product: Hanna Andersson Sweatpants

    Hanna Andersson

    Sweatpants
    Size 12-18 mo
    $16.99 $12.74 25% off with code THANKU
    43% off estimated retail
    Badgley Mischka Active Pants (view 2)Badgley Mischka Active Pants (view 1)
    View Product: Badgley Mischka Active Pants

    Badgley Mischka

    Active Pants
    Size 12-18 mo
    $43.99 $35.19 20% off with code THANKU
    49% off estimated retail
    Gap x Disney Sweatpants (view 2)Gap x Disney Sweatpants (view 1)New With Tags
    View Product: Gap x Disney Sweatpants

    Gap x Disney

    Sweatpants
    Size 12-18 mo
    $12.99
    60% 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
    $9.99 $7.99 20% off with code THANKU
    66% off estimated retail
    Gymboree Sweatpants (view 2)Gymboree Sweatpants (view 1)
    View Product: Gymboree Sweatpants

    Gymboree

    Sweatpants
    Size 12-18 mo
    $8.99 $7.19 20% off with code THANKU
    57% off estimated retail
    Splendid Sweatpants (view 2)Splendid Sweatpants (view 1)Flawed Gem
    View Product: Splendid Sweatpants

    Splendid

    Sweatpants
    Size 12-18 mo
    $13.99 $10.49 25% off with code THANKU
    57% off estimated retail
    Hart + Land Sweatpants (view 2)Hart + Land Sweatpants (view 1)
    View Product: Hart + Land Sweatpants

    Hart + Land

    Sweatpants
    Size 12-18 mo
    $15.99 $11.99 25% off with code THANKU
    70% 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
    $5.99 $4.79 20% off with code THANKU
    80% off estimated retail
    Delta Sweatpants (view 2)Delta Sweatpants (view 1)
    View Product: Delta Sweatpants

    Delta

    Sweatpants
    Size 12-18 mo
    $8.99 $7.19 20% off with code THANKU
    18% off estimated retail
    Giggle Sweatpants (view 2)Giggle Sweatpants (view 1)
    View Product: Giggle Sweatpants

    Giggle

    Sweatpants
    Size 12-18 mo
    $8.99 $7.19 20% off with code THANKU
    18% off estimated retail
    Gap Sweatpants (view 2)Gap Sweatpants (view 1)Price Drop
    View Product: Gap Sweatpants

    Gap

    Sweatpants
    Size 12-18 mo
    $10.99 $8.24 25% off with code THANKU
    31% off estimated retail
    Adidas Sweatpants (view 2)Adidas Sweatpants (view 1)Price Drop
    View Product: Adidas Sweatpants

    Adidas

    Sweatpants
    Size 12-18 mo
    $9.99 $7.99 20% off with code THANKU
    70% off estimated retail
    Juicy Couture Sweatpants (view 2)Juicy Couture Sweatpants (view 1)Price Drop
    View Product: Juicy Couture Sweatpants

    Juicy Couture

    Sweatpants
    Size 12-18 mo
    $10.99 $8.79 20% off with code THANKU
    83% off estimated retail
    Canadiana Clothing Co. Sweatpants (view 2)Canadiana Clothing Co. Sweatpants (view 1)Price Drop
    View Product: Canadiana Clothing Co. Sweatpants

    Canadiana Clothing Co.

    Sweatpants
    Size 12-18 mo
    $8.99 $7.19 20% off with code THANKU
    35% off estimated retail
    Juicy Couture Velour Pants (view 2)Juicy Couture Velour Pants (view 1)Price Drop
    View Product: Juicy Couture Velour Pants

    Juicy Couture

    Velour Pants
    Size 12-18 mo
    $8.99 $7.19 20% off with code THANKU
    91% off estimated retail
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