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Girls of the same age may need a different size and style of sports bra.
Popular Girls Sports Racerback Bra – Girls Sports Bras Print & Solid Colors | See Amazon
Where to shop for a teenager sports bra?
If you shop online for a ‘sports bra for a teenager’, it’s often the girly style you get. You’ll see sports tops that will do fine for small AA or AAA cups. They provide light support.
Depending on a teen’s cup size, you can also look at sports bras for grown-ups. Because if she has an A or maybe B-C cup, a grown-up style sports bra is what you’re looking for.
Under Armour Girls’ HeatGear Armour Sports Bra | See all 10 teen sports bras
A pull-over racerback top is a great choice for a girl who wants to feel secure. The easy, pullover design gives her a held-in feel. There are no pads, no fuss, and most importantly, no bounce.
Sports bras with a cup size design

Sport teen bras with a cup design start from A cup and go up to B cup.
As I mentioned, needing a bigger cup size you would need to shop for adult brands.
Buying your first cup-sized bra? Read more on Buying a first bra with a cup
Sports tops in a bralette style

Sports tops are less supportive than a cup-sized sports bra or a racerback style. A good choice for low-impact sports and breasts that are just beginning to develop.
They are easy to wear and are of course comfortable for daily wear too.
Racerback sports tops for teens
A racerback design is great for doing sports. You have the freedom of movement without having to worry about shoulder straps sliding down.
How do I know my sports bra size?
There’s no such thing as a standard bra size for a teenage girl.
A 13-year-old girl can have a cup A (or smaller or bigger). But it might also be a cup-sized bra is still too big for her. Her breasts may not have started to mature and grow yet.
Petite adult women may fit teen bras because they have a small cup size, like AAA, AA, or A. On the other hand, a teenager may have developed the same size as an adult woman wearing B, C, D, or larger cups.
Knowing this, it all comes down to measuring your underbust and bust size. If your breasts have not yet grown it’s ok to just measure your underbust.
US Size | Age (in years) | Height (in inches) | Chest (in inches) | Waist (in inches) |
---|---|---|---|---|
XS | 6 – 7 | 48 – 50 | 25.5 – 27.0 | 23.5 – 24.0 |
S | 8 – 9 | 50 – 54 | 27.0 – 29.0 | 24.0 – 25.0 |
M | 10 – 11 | 54 – 57 | 29.0 – 31.0 | 25.0 – 27.0 |
L | 12 – 13 | 57 – 61 | 31.0 – 33.5 | 27.0 – 28.0 |
XL | 14+ | 61 – 65 | 33.5 – 36.5 | 28.0 – 29.5 |
10 sports bras for teen girls
1. Fruit of the Loom Big Girls’ Cotton Built-Up Stretch Sports Bra

Fruit of the Loom Big Girls’ Cotton Built-Up Stretch Sports Bra | See Amazon.com
✔ giving support while giving her room to grow
✔ made with 95% cotton
2. Maidenform girls’ seamless racerback sports bra | S-XXL

Maidenform Girls’ Seamless Racerback Sports Bra | See Amazon.com
✔ a fabulous starter bra for girls
✔ US size 4 up to 16
✔ pull-on closure racerback style
✔ comfortable and lightweight
3. Under Armour girls’ Heatgear sports bra | XS-XL

Under Armour Girls’ HeatGear Armour Sports Bra | See Amazon.com
✔ 4-way stretch fabric
✔ made with anti-odor technology
✔ in many colors available
✔ has a thin padding
4. Nike Older Kids’ (Girls’) Sports Bra | XS-XL

Nike Older Kids’ (Girls’) Sports Bra | See Amazon.com
✔ racerback sports bra by Nike
✔ thick knit fabric
✔ Dri-Fit technology
5. bebe Girls Seamless Racerback Sports Bra with Removable Pads

bebe Girls Seamless Racerback Sports Bra with Removable Pads (4 Pack) | See Amazon.com
✔ cross strap design
✔ seamless
✔ racerback style
✔ easy care, made of 92% nylon and 8% spandex
6. Calvin Klein girls’ big seamless hybrid bra | 30-36 A

Calvin Klein Girls’ Big Seamless Hybrid Bra | See Amazon.com
✔ starter bra from Calvin Klein
✔ adjustable straps
✔ the very light lining prevents the nipples from showing
✔ easy care, made of polyester, nylon, and spandex knit
7. Amazon essentials girl’s 2-pack active sports bra | XS-XL

Amazon Essentials Girl’s 2-Pack Active Sports Bra | See Amazon.com
✔ pack of 2
✔ light support
✔ seam-free, soft and stretchy
✔ great choice when not needing a cup-sized bra yet
8. Felskin Training Bras for Girls 8-14

Felskin Training Bras for Girls 8-14 | See Amazon.com
9. MANJIAMEI big girls cotton training bra lightly padded | 32-38A

MANJIAMEI Big Girls Cotton Training Bras Wireless Light Padded A Cup | See Amazon.com
✔ lightly padded training bra
✔ soft 100% cotton inside
✔ good support for sports
✔ also a basic everyday bra for developing teens with a cup A
10. Barbra wireless lightly padded training bra 5 Pack | 30-36A

Barbra Lingerie Big Girls Bras for Teen Girl Wireless | See Amazon.com
✔ training bra for preteen girls and small petite grown-ups
✔ molded lightly padded cups
✔ made of cotton and spandex
✔ lightly padded which is sewn in, so it is not removable
Other articles you might like
Guide for A cup bras & swimwear
Teen bras for A-C cups
What is the smallest bra size online?
Small bra size chart for AAA-A cups
How to measure your bra band size?
Sports bras for small cups AA-A
Easy bra clips for racerback style
Bra extensions