Loved by families across Australia - these are our most popular picks right now.
Our Bestselling Onesies & Costumes
We're Onesie Store AU - because life's too short for boring pyjamas
Affordable onesies, kigurumi & costumes for kids and adults across Australia
We started Onesie Store AU because we couldn't find onesies and costumes in
Australia that were both high quality AND affordable. The big brands wanted
$80+ for a onesie - we knew that was too much.
Today we stock over 200 styles of kids onesies, adult onesies, kigurumi pyjamas, and dress-up costumes for every occasion - from school holidays and birthday parties to Halloween and Christmas. Animal onesies, anime costumes, matching family sets - we've got it all.
Why Australians choose Onesie Store AU
Prices that actually make sense
Why pay $80+ for a onesie when you don't have to? Our kids' onesies start at $19.99 and adults from $29.99 - the same plush quality, without the brand markup. More fun for less.
200+styles for every occasion
From kids' unicorn onesies and animal kigurumi to adult costumes and anime dress-ups - we stock over 200 styles. Perfect for birthdays, Halloween, school holidays, costume parties, and lazy Sundays.
Delivered Directly at your doorstep
Every order is packed and dispatched from our Melbourne warehouse within 1–2 business days. $9.99 flat-rate shipping
Australia-wide - or free when you spend over $75.
Fresh styles just added - be the first to grab them.
New Arrivals
Fresh styles just added - be the first to grab them.
New Arrivals
✦ Animal, anime & kigurumi onesies
✦ Kids & adult sizing
✦ 200+ styles in stock
✦ Kids onesies from $19.99
FAQ
Shipping & Delivery
Shipping & Delivery
Do you ship Australia-wide?
Do you ship Australia-wide?
Yes - we ship to every state and territory in Australia. Flat-rate $9.99 shipping on
all orders, with free standard shipping on orders over $75. All orders are packed and dispatched from our warehouse within 1–2 business days.
How long does delivery take?
How long does delivery take?
Standard delivery to metro areas takes 3–7 business days after dispatch. Regional and
remote areas may take 5–10 business days. You will receive a tracking number by email once your order is dispatched.
Do you offer free shipping?
Do you offer free shipping?
Yes! All orders over $75 qualify for free standard shipping Australia-wide. For
orders under $75, flat-rate shipping is $9.99 to any Australian address.
Sizing & fit
What sizes do your kids onesies come in?
What sizes do your kids onesies come in?
Our kids onesies are sized by height in
centimetres: 85cm, 100cm, 110cm, 120cm, 130cm, 140cm, and 150cm. We recommend
measuring your child's height and checking our size guide page for the best fit. When in doubt, size up - onesies are designed to be worn loose.
What sizes do your adult onesies come in?
What sizes do your adult onesies come in?
Adult onesies are available in S, M, L, XL, and XXL. Size S fits heights approximately 155–160cm, M fits 160–165cm, L fits 165–170cm, XL fits 170–175cm, and XXL fits 175–185cm. Check individual product pages for exact measurements.
Do you have matching onesies for kids and adults?
Do you have matching onesies for kids and adults?
Yes! Many of our most popular styles - including the Unicorn, Cow, Duck, and Pig
onesies - are available in both kids and adult sizes. Search by the animal name to find matching options for the whole family.