1930s Knitted Swimsuit Pattern – Backless Bathing Costume

This rather lovely knitted swimsuit from 1936 is a wonderful example of how stylish beachwear could be in the 1930s. With its fitted shape, flattering V-neckline and short legs, it looks quite simple from the front, but turn it around and there’s a clever surprise!

The backless design features crossed straps threaded through four rings, which then continue around the waist to tie in a pretty bow at the front. The shaped brassiere top gives the swimsuit its distinctive fit, while alternating bands of stocking stitch and moss stitch add a little texture.

The original pattern was knitted in 9 oz (approximately 256g) of Crocus non-shrink knitting wool, using No. 12 (2.75mm) needles and a No. 11 (3mm) crochet hook. You’ll also need four bone rings, or suitable modern equivalents.

The pattern is designed to fit a 35–36 inch bust, with a tension of 8 stitches to the inch after pressing.

This is quite an involved little project, particularly when it comes to assembling the brassiere, gusset and unusual back straps, so I’d recommend it for a confident knitter who enjoys a challenge.

As with all vintage knitting patterns, it’s worth making a tension square before starting, especially if you’re using a modern yarn in place of the original wool.

Choose How You Receive Your Pattern!
You can either: Order the printed version and have it mailed right to your door, perfect
for adding to your knitting collection. or opt for the PDF download if you’d like to get
started right away! The choice is yours, happy knitting!