Maurice Chevalier’s secretaries.
Does Maurice Chevalier really NEED so many secretaries? Of course he does — he’s Maurice Chevalier! And do their secretarial dresses really need to be backless? Yes, they do. He’s Maurice Chevalier!
From FOLIES BERGERE, a 20th Century Fox musical comedy that makes a pretty good job of impersonating the Busby Berkeley style:
Girls in stockings with umbrellas dancing on lightning bolts. It’s a visual treat and a health and safety nightmare.