Ballet is a world known for being a complete skinny-ocracy. You've got to be super buff, with body fat of, I don't now, -5% to make it. Check out the amazing moves on this guy, though! A wonderful reminder that you're never too old, too fat, or too anything else to do something you want to do.
(Tip: the music in the video is classic ballet warm up piano and it's terrible. Don't bother turning on the sound, just watch the moves with whatever music you're already listening to.)