Third Sin (formerly Pretty Thorax) is a one-woman brand creating harness bras and lingerie fashion accessories in South Yorkshire, UK.

Third Sin began in 2014, when I was a broke second-year undergraduate student, teaching myself to sew and learning as I went. I never imagined I’d still be doing this over a decade later. Since then, I’ve completed my undergraduate degree, a master’s, and a PhD, while continuing to build and evolve the brand alongside my studies. What started as a small project has grown beyond anything I could have imagined, and I’m endlessly grateful for the love and support of the incredible clients who’ve been part of that journey.

Every item in my shop is designed and handmade from scratch by me. There are no factories or mass production here - each piece is cut, stitched, and packed by my own hands in my home workshop, using materials sourced from small UK businesses wherever possible.

I’m passionate about making Third Sin as customisable, accessible, and size inclusive as I can. Most designs can be made in any size, and if you’re looking for something a little different, feel free to reach out - I’ll always do my best to accommodate your needs.

Thank you for supporting handmade!

xo
Chelsea