AthletikTween Size Guide

Size 8Y 9Y 10Y 11–12Y 13–14Y
Height 131cm 141cm 148cm 156cm 164cm
Chest 68cm 70cm 72cm 76cm 80cm
Waist 58cm 60cm 62cm 64cm 68cm
Hip 72cm 74cm 76cm 81cm 86cm

Measure the body (not the garment).

If between sizes, we recommend sizing up for comfort.

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How do I choose the right size?
We've aligned our sizing with Australian standards, but every girl grows differently, especially in the in-between years. We recommend choosing based on how she likes to feel: snug and supported or a little more relaxed.

What if I'm unsure about sizing?
You're not alone β€” most mums are navigating this stage too. If you're between sizes or unsure, we suggest sizing up for a longer-lasting fit and extra comfort.

Will it fit as she grows?
Our pieces are designed with flexibility, stretch, and movement in mind, so they adapt to her body and keep her comfortable as she grows and moves.

What if the size isn't right?
We've got you. We offer a 30-day return policy, so if something doesn't feel quite right, you can exchange or return it with ease.

Is it really risk-free?
Yes β€” completely. No stress, no pressure. Just finding the fit that helps her feel confident, comfortable, and completely herself.