I don't notice them at pro sports events in any way, shape or form.
I do love their enthusiasm and athleticism at the collegiate level though. Looks mean nothing to me here - I just want them to lead me into some "lame" cheer for my team or do some crazy flips off of a male cheerleader's shoulders or upfacing hands. Crazy stuff. The more megaphones we get, the better! ;-)
Or how about the cheerleaders that do standing backflips after free throws? I was watching a game the other night and some ACC school (cant remember who.... might be FSU) had their entire squad to a backflip after their player made both free throws. Unreal!