They never did find out who Jack The Ripper was, is it you This one size fits most adults costume is a s shirt and waistcoat one piece is worn with a long black velvet cape. Shown here with models own black trousers, we have added a top hat and a pair of gloves, available separately. Cape. shirt back and waistcoat back 100% polyester shirt and wiastcoat front are 100% cotton.