If you have an hour to kill--and yes, it will take an hour--check out the YouTube vids of the DragonCon 2011 parade. Yes, they have their own parade. They close down a 4 block area for it. It takes an hour. A whole hour. They group costumes by themes and the Caps had a HUGE section this year, complete with a marching corps of about a dozen or more of those USA/USO girls.
Here's just the girls:
http://www.youtube.com/watch?v=GlZQYosd2_8