im 17 with a small body, i got a XL and it fits perfectly

Nike
Big Kids' (Girls') Sports Bra
On Spring Sale until April 27. Discounted Off Listed Price. Discount applied at cart.
The Nike Sports Bra has a racerback design that lets you move freely. Thick knit fabric with Dri-FIT technology helps you stay dry and comfortable.
- Shown: Black/Black/Black/White
- Style: BV1435-010
- Country/Region of Origin: Vietnam
Nike
CLASSIC COMFORT. SNUG SUPPORT.
The Nike Sports Bra has a racerback design that lets you move freely. Thick knit fabric with Dri-FIT technology helps you stay dry and comfortable.
Benefits
- Nike Dri-FIT technology helps you stay dry, comfortable and focused.
- Racerback straps feel snug and supportive.
- Flat seams move smoothly against your skin.
Product Details
- Medium support
- Body/panels lining: 82% polyester/18% spandex. Elastic: 91% nylon/9% spandex. Front lining: 85% recycled polyester/15% spandex.
- Machine wash
- Imported
- Shown: Black/Black/Black/White
- Style: BV1435-010
- Country/Region of Origin: Vietnam
Size & Fit
- Tight fit: snug and form-fitting
- Medium support: feels like a snug hold to keep everything in place
- Size Guide
Free Shipping & Returns
Returns are free for both Members and guests (only for items that are unused and within 30 days upon delivery. Exceptions apply).
About Returns
Members get free standard shipping (for guests, only for purchases over ¥15,000) and discounted expedited shipping.
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Reviews (2)
*Includes incentivized reviews/ratings.
Reviews (2)
*Includes incentivized reviews/ratings.
5 Stars
Ky458036421 - Oct 05, 2023
Great sport too
E L. - Jan 03, 2022
My daughter is small and athletic couldn't be happier with this purchase perfect fit and great look

Nike
Explore Nike Sports Bras for Girls

Get That Fit on Point
First, make sure the straps stretch without pinching the skin. If the straps pinch, size up. Next, check the chest band—two fingers should fit between the body and the band. Lastly, try jumping. Feeling too loose? Size down. Minimal bounce? Feeling comfy and confident? You’re all set!
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How Nike Innovates for Girls
A lot goes into designing the perfect bra for growing girls. Learn more about how Nike innovates for girls and how to find the right bra for her on our Behind the Design page.