Erm, men playing women (and, later, women playing men) is completely normal (at least, in the UK) and has been since at least Shakespearean times. In pantomimes here, the pantomime Dame is always played by a man. And there's a character in panto which is always played by a woman, even though the character is male (not a panto fan, so can't actually remember which character that is. Dick Whittington or something like that?!)