People newspaper which is not to be confused with People Magazine has an interview with one of Russell Brand's former assistants. She says she was forced to quit her job because Russell was too high maintenance and he loved to walk around in his underwear. Only his underwear and only ones which would allow him to breathe free and easy very very quickly.
"Russell was very, very high maintenance. He used to walk around in his underpants. Calvin Klein boxers might have done it for me, but Y-fronts certainly didn't. Some things I was asked to do were nearly impossible. I've worked for Michael Flatley and Harvey Goldsmith, but Russell was by far the most demanding. He does go through a lot of personal assistants, I think some have even had mental breakdowns."
I can actually see this, but I think much of it must have been pre Katy Perry. Think about it. Russell was having sex with four or five different women each day. This was ll about convenience and not just trying to terrorize his assistants.