Super Hero Costumes

What is the purpose of a super hero’s costume? A large part of it would appear to be a way of disguising his or her identity. It certainly seemed to work for Superman, who by whipping off his glasses and donning a red and blue costume managed to conceal his identity from everyone, including his long term love interest Lois Lane.

However, I think the following clip from the Green Lantern movie provides a much more realistic take on superhero costumes as a disguise.