How to make your daughter's first period EASY and FUN!CLICK HERE TO READ.
Welcome to Knicked, Welcome to Puberty and Periods SHOP HERE
Please see each product page, for individual sizing.
As a general rule, please choose the same size for our period undies and period swimwear as your child's regular underwear size.
Our period underwear is designed here using Australian Child/Youth underwear guidelines. It's important to note that child sizing, also crosses over into women's sizing at our 12/14, so we have also shown this on our sizing charts (on each individual product page) to assist.
We also understand purchasing online can make judging sizing difficult and everyone has a different body shape (literally hundreds of waist & hip combinations) so we have created guides on each product page to help you choose the best fit for each product, or feel free to email our helpful team at theteam@knicked.com.au with waist & hip measurements so we can assist further.
To measure against existing underwear: use the flat lay measurement (side seam to side seam on the waistband) to compare with their current underwear.
Don't panic if you do find you've ordered the wrong size, KNICKED will happily exchange sizing and also cover the postal costs to reship (once per order) as long as underwear has been tried on over clean underwear and returned in AS NEW condition (not washed/worn free of lint/hair/marks), and packaging in original condition.
Please click here for our Exchange/Refund Forms & Guidelines to organise an exchange.
Midnight Paisley - 3 Piece Set
Short-Sleeve Rashie with back criss cross design and shorts
Our Midnight Paisley set is more than just cute swimwear; it’s your ultimate reliable secret weapon for summer Designed for active teens and tweens who love to mix fashion with high-performance function, this gorgeous set pairs a sleek black short-sleeve crop top with striking monochrome print bottoms. Featuring a gorgeous botanical paisley print on the shorts with side ties and flexible styling options, it combines effortless cool with high-tech security.
💖 What Makes It Different?
Unlike regular swim sets, our Midnight Paisley Set features:
✔ Black short sleeve rashie top with adjustable tie criss cross back design
✔ Black/white paisley designed matching shorts with pull up/down ties
✔ Med/heavy absorbency swim briefs
✔ Removable mini modesty cups
✔ Sun protection & coverage
✔ Complete 3-piece set
This cute mix'n'match set offers sun protection PLUS the shorts are perfect for water parks - everything you need!
🏊♀️ Perfect For:
• Beach & pool days
• Med/heavy flow protection
• Sun protection
• Water parks
• Complete summer set
🌸 What's in the Set:
• Paired of our original med/heavy absorbency swim briefs with removable side ties
• Short-sleeve black rash top (removable mini modesty cups) which gives sun protection & coverage
• Paisley shorts (ideal for swim parks over your Knicked swim briefs)
Please note: Knicked only manufacture the period swim bottoms, and we purchase the additional pieces separately, therefore sizing may be variable and is based on waist sizing.
🌿 Designed for Sun & Period Protection
Created by a mum, designed for real periods.
Because Knicked Swimwear allows girls to NEVER miss out on the fun when it comes to the water.
Knicked period undies have always been and will continue to be FREE FROM NASTIES such as PUL'S (plastics) or PFAS (chemicals).

* Please see our swim FAQs for more information.

Our beautiful teen Model is wearing our size Teen 14/16 (Adult 10)
Tracked postage is $9.95
Express postage is $14.50
Orders over $99 receive complimentary FREE REGULAR SHIPPING
Knicked will exchange item(s) that have not been washed, worn and are in AS NEW condition, we request you submit our Exchange Form within 14 days of receiving your product. Knicked will cover one new shipping cost as a gift to assist - please note: if purchased on sale or outside Australia item(s) can ONLY be returned for a gift voucher to repurchase a new size or style within 5yrs.