Saturday Night Fever Adult Costume includes Jacket, Matching Pants, and Vest with Attached Collar. Everyone loves disco. Why not be Saturday Night Fever man and move n' grove your moves this Halloween or any adult costume party . This costume design is part of our 70s theme. A groovin retro costume. Pair this 70s flashback costume with the Disco Dolly costume for a fun, groovin couples costume. Staying Alive... Staying Alive... Stay alive and grovin it with this new Saturday Night Fever adult costume. All the ladies will love you this Halloween season when they see your moves on the dance floor in this handsome glam Saturday Night Fever costume.