Handmade one-piece swimsuit free pattern

Make your beginner friendly simple and comfortable one-piece swimsuit with this free PDF sewing pattern.


Simple One is a comfortable one-piece swimsuit pattern from size 36 to size 52.

It is created for a 4-way stretch swimwear fabric like Lycra, stretch polyester featuring a crosswise and lengthwise stretch of 50%. 

This sewing pattern is designed to add a 4-way stretch lining at the front and the back. 

You can leave out the back lining if you prefer, but be aware of the transparency

Choose the best size for you


For the better fit to all heights his pattern has two different versions in all sizes.  

The difference is the length of the pieces.  

Before starting to print your pattern, please consider how tall you are.


If you are 165 cm tall or under please choose version H1.


If you are 166 cm tall or higher please choose version H2


swimsuit size guide by height

size guide for swimsuit pattern

To get the best result make a fit test first from a cheap fabric. Make sure all is fine. Make fitting changes if they are needed and cut your precious fabric when you are satisfied with the result.

Don´t worry! Nobody has the standard sizes. Look at me! I am size 38 at the bust, but 40 at my waist and my hips. I use size 38 because it is a stretch  enough to cover those extra centimeters at the hip.

If you are between two sizes choose the smallest one, the stretch fabric will allow it to stretch some centimeters. If the difference is bigger than one size consider adding some extra centimeters where it is needed.

Please note that the elastics will make you feel your swimsuit more fitted. Don’t worry if it is gaping at the armholes or other parts before adding the elastics.

how to make handmade swimsuits


swimsuit sewing course


Are you insecure about sewing the swimsuit with all those tricky elastics? 


Don’t worry! Watch the last, ninth lesson of my Skillshare class: Design, Sew, Swim, where you will learn step by step how to sew the Simple One swimsuit.

 Sign up for free to the Skillshare Premium Membership and you will have 14 days to watch this class for free.

Are you wondering what kind of fabric to use for your handmade swimsuit? 


I made my swimsuits with the Sport Lycra from Spoonflower. I love this fabric, as it is strong, but stretches and maintains its vivid colors after using them for several years.


Head to the shop to select the print you like.

quality Lycra for swimwear

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