Auditions are fully clothed. Otherwise, they would have a mess of lawsuits to deal with. Most of the guys in our cast were well-endowed, but there were a couple who were average or downright teeny. It was quite obvious that some guys were cast for looks and others for theatrical talent. Chicago doesn't have the endless pool of gay actor/singer/gym-clones desperate to work on stage found in New York. My body is simply average, but they were looking for someone with strong vocal and comedic skills at the time. That, and someone who was a quick study. I got a rehearsal video of the choreography, one one-hour rehearsal with the choreographer, and one 30-minute rehearsal with the cast just before curtain of my first performance. I was too busy panicking to be concerned with my body.
"What can you expect from a bunch of seitan worshippers?" - Reginald Tresilian