First bras for girls on the move.

Finally, an everyday bra that’s comfy, supportive, and made to move with you.

Finding a first bra made for movement and all-day comfort used to be difficult.

At sister kit, we design bras just for growing girls — giving her the support, comfort, and freedom she needs.

Right from the start.

What's the sister kit difference?

designed specially for girls

our design

created for movement and comfort

our range

flexible sizing for growing bodies

size guide

made from breathable, soft and stretchy bamboo

our fabric

Soft. Supportive. Made for movement. Made for you.

explore our bras

From our customers.

★★★★★

Ok so, the bra is PERFECT! Not only style and fit it has HUGE SUPPORT!!
The measurement table is spot on!! Coming from one uneducated measurer it was extremely helpful!

Amy
★★★★★

Beautifully designed, incredible fit and the softest fabric in the most heavenly colours. Sisterkit is the only bra my daughter will happily wear.

Jane
★★★★★

Our first order arrived beautifully packaged, and my daughter immediately felt comfortable wearing the bra. She loved how soft the material was and wore it all day without a single complaint.

Angela

Why we created our bras?

Whether it's your first bra or your next bra, we created sister kit so girls/teens could have the perfect bra, that's both soft and supportive.

The bra you can wear to school, sport, dance . . . or for doing nothing at all.

It's a multi-purpose, everyday bra - so you can do everything you want in comfort.

When she's ready to move on from her crop top, we'll be here for her. And hopefully, when she receives her first bra in our custom packaging, she'll feel that this next step has been a fun and happy one.

What makes our bras unique?

Our bras feel like a soft hug. No digging in, no padding, no underwires or itchy fabric. And yet, they are super supportive. Just super soft, organic bamboo and great design.

Sized for girls

Soft, hypoallergenic organic bamboo

Strong and flexible under-bust band

Fully adjustable

Double layer of fabric for support

Power mesh layer for stability

We think you'll love our bras.

Support that moves with you.

Our bras are designed just with you in mind.

Feel prepared for anything in sister kit *** Feel prepared for anything in sister kit *** Feel prepared for anything in sister kit *** Feel prepared for anything in sister kit ***