
Making myself a striped one-piece swimsuit was already dream… but making my baby a matching one..? I have no words.
These two swimsuits were tried and tested during our trip to the Dominican Republic and i can tell you they really held up!
I made them pretty quickly before I left (hence the lack of precise step by step photos) But here’s what I have to serve as a guide!J
DIY one-piece swimsuit

To make this DIY one-piece swimsuit I used the pattern Lucien by Wissew That I slightly altered
First I lined my whole swimsuit because my fabric was mainly white and I didn’t want nay surprises!
Then I had to reduce the decolleté. I made a first try and honestly you could almost see my belly button. When I cut it again, I made the whole suit a bit longer because I thought it was a bit tight.
Supplies:
- 0,5 mswimsuit fabric this pattern on spoonflower designed by sunny afternoon
- 0,5 m lining fabric
- stretch fabric needle
- machine and thread
Time
- 1,5h max
Steps
The original pattern does not require lining but here are the steps I follower
- Print and cut out patter Lucien by Wissew, I didn’t want a differetn strap so I taped the small part to the front of the swimsuit pattern.
- Cut out your pieces on the fold (fabric and lining)
- Assemble your two “swimsuits” separetely at the shoulders and crotch(with just a straight stitch)
Thwn I followed this tutotial to assemble the two together. (I didn’t respect the 75% thing on the bum I just went with 25 all around)
I was a bit worried making this swimsuit but I am SUPER happy with it and it was really easy!!

DIY Baby swimsuit
In this case I traced one of elliot’s swimsuits and made the arms and legs longer to protect him from the sun. I didn’t line it because…. he’s a baby and wearing a diaper.
You could also give this pattern a try!
Fabric
- not even 0,5 m of swimsuit fabric
- a big plastic zipper (25 cm)
- thread, needle, sewing machine
Time : 1h
Steps
- I traces this little swimsuit to get 2 sleeves and two identical pieces (front and back) then I cut the back piece in half
- I then assembled the pieces as shown on the first picture and sewed them together. On the back pieces, sew together from the bottom on about 10 cm. (picture 2)
- Place your swimsuit right sides together so the front and back are on top of each other (image 2) and sew all along from the sleeve to the ankle.
- To create space for baby’s big diaper, cut a piece of fabric in the shape of a lemon and sew inside the crotch (images 3-4-5-6)
- Sew zipper in the back. I added a little collar, a simple fabric strip (fold ed in half) assembled right sides together with a zig zag stitch (image 7)
- I added little cuffs on the ankles the tighten a bit (images 8-9). Assemble right sides together with zig zag stich)
- I simply hemmed the ends of the arms.
voila!