Alan Cumming Dishes On Biggest 'Burlesque' Diva

Alan Cumming appeared Thursday night on Andy's Cohen's Watch What Happens Live, and the actor found himself under the gun.

Cohen got Cumming to participate in a feature called Plead The Fifth where guests (hostages?) are asked three tough questions and allowed to demure on one.

Cumming used his out to avoid revealing which of his films he wished, after watching, he had never made. But he did have to dish on which of his co-stars was the biggest diva on the set of Burlesque (Christina Aguilera) and which star he thinks should never again grace a Broadway stage. Check out the video below to find out his surprising answer to that one!