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Children's & Swim & Active · Stretch · MN4501

Mini Cottesloe Swimsuit pattern

4.9out of 5 11 reviews

Mini Cottesloe is the classic swimsuit set for kids - one piece swimsuits and mix and match bikinis, thoughtfully designed with age-appropriate details and active little lifestyles in mind. It began when Bunny needed an athletic bikini she could swim laps in, and asked for the same one I'd made myself. The views roughly align with the adult pattern, adjusted for little ones, and by changing your fabric you can also make leotards, underwear and trainer crop tops.

Skill level Beginner Friendly
Pattern Formatchoose how you sew
✓ Instant download✓ Posted to your door ✓ Nothing to print or assemble ✓ Free step-by-step sewalong ✓ Secure checkout
Find your fit & fabric

Sizing & yardage

Everything in one place - measure your body, pick your size, see exactly how much fabric to buy, and check the finished garment measurements for the fit you want.

Note: Fabric requirements include 5% fabric shrinkage allowance. You may need to adjust requirements if your fabric shrinks more than 5%.

Loved by makers

Reviews

4.9out of 5 11 reviews
K
Karen
She Loved it!

I purchased both the adult and mini version. When my granddaughter saw the fabric I had purchased for my suit she said “I’d wear that”! So I decided to test my first swimwear
Make on a smaller size! It was great! Now to make mine!

T
Talia
Perfect fit and great instructions

I made it for my grand daughter and she loves it.

Y
Yvette
GREAT PATTERN

This was such a quick make and OH SO GREAT. My daughter has been wanting a 2 piece but none of the swimsuits out there seem to work for her body (too big, too small, to weird on the butt…..we all know this calamity). She was so happy. I have posted pics on @sew_fuego on the gram. Thanks again for making her day!!!!! So special.

K
Kate
Easy, adorable, customizable

I made the two piece, high waisted version in size 5. It looks great, fits well, and I’m told it’s comfortable. Instructions were very easy to follow. I’ll be making this one again!

O
Olivia
Great pattern

Just finished my mini Cottesloe for my granddaughter! I am officially her favourite Granny thanks to this great pattern x

L
LouiseS
Super easy.

Fab pattern, easy to follow.
My 6yr old loves the 2 piece I made for her.

I struggled a bit to get my head round the size guide as my daughters measurements were falling into a really small age, I cut the top for an age 5, it looked too small so opted to just go for age 6. It fitted perfectly.

I opted for View C with a contrasting waistband.

M
Michael

Very easy to assemble from print out.

L
Laura
Overall: love it!

I really enjoyed sewing that high waist bikini for our daughter. Unfortunately it’s a little too tight. I mean … it fits … but it’s nearly impossible to get herself dressed without help.
We love it anyhow … next one will be the next size 🧡

M
Maya
Great swimsuit!

I love this pattern. I have amazing “watermelon” fabric to make a pink top and green bottoms for my kids - and of course a matching one for me.

L
LYNDA
Super make

I struggled for a few days thinking through the crop top assemblage but then bit the bullet and followed the video instructions and it worked out extremely well. My customer said the crop top was a bit short for a 7 year old so I’ll add a couple of cm next time. I added a skirt to the shorts as it was for a transgender child. Forgot to take photos. It worked out fine and was a total success. Thank you.

R
Rachel
Mini Cottesloe, many options, easy sew

I have really enjoyed sewing all variations of this pattern, the instruction are clear and the fit is great for kids! My daughters proportions never matched with bikinis or a one piece and now she has 4 great fitting swim suits! I am a intermediary sewer and struggled with a more complex sewing pattern prior to this, but this pattern was pretty straight forward.

Why Megan Nielsen

Drafted for real bodies & real life

Thoughtful size range

Standard 0–20, Curve 14–34, plus a true separately-drafted Curve block.

Professionally drafted

Industry-standard drafting, uncompromising on quality and fit.

Tested, then tested again

Fit-tested across bodies and perfected before it ever reaches you.

Never sew alone

Free sewalongs, tutorials and real human help when you get stuck.

Mini Cottesloe Swimsuit pattern
$26.50 AUD incl. GST