At Wonsie, we know that comfort starts with the right fit. That’s why our bodysuits are available in a wide range of sizes for children, teens, adults, and the elderly.

How to Choose the Right Bodysuit Size

• Our numbered sizes (ie 4 - 10) are based on general age ranges, but everybody is different, so please refer to the measurements on the size chart.

• If you're unsure, we recommend sizing up, especially for taller individuals or those who wear nappies.

• For the most accurate fit, check our size chart below, paying close attention to the torso length.

Adult & Teen Sizes

Sizes 12/XS through 20/XL are sizes suitable for teens and adults.
Please note: Size 20/XL is quite large and suited for extra tall or broad-bodied adults.

SIZE 22/XXL in some of your favourite styles coming mid 2025!!!

Swimwear

Our swimwear features excellent 4-way stretch.
If you're between sizes, we suggest choosing the smaller size for a snug fit when wet.

Swim Nappies, Bibs & Accessories

Sizing varies by product. Please refer to each product listing for detailed sizing information.

Need a Size Exchange?

No worries! Please refer to our exchange policy or contact us at sales@wonsie.com.au - we’re always happy to assist.