Vesper Vinyl Backless Mini Dress in Black Oh Polly Black Lace Mini Dresses & Windsor Vesper Vinyl Backless Mini Dress in Red Oh Polly Black Lace Mini Dresses & Windsor Black Lace Mini Dresses & Windsor. The Vicious Cycle Mini Dress Black features thin, adjustable shoulder straps, bust underwire, lined, front cut out detailing, mini length, invisible back zipper and clasp closure and hook and eye closure. Style with kitten heels and gold accessories for a look we can't get enough of!?? Savannah is 170cm & is wearing a S Dekota is 172cm & wears an XS