If you re planning on hitting up a discotheque this Halloween you can get your Saturday Night Fever on with this 70 s Denim Adult Jumpsuit Costume! This denim will make you look like one of the grooviest dudes around on Halloween so you can bust all your best disco moves in style with this period piece costume This is a great costume to wear when you want to be able to move in your costume since this outfit is made with energetic dancing in mind.