I've put together a gallery of Flash-related costume photos from Comic-Con International. It's a mix of photos I took myself and photos I found on Flickr, and includes 3 Jay Garricks (including myself!), a Black Flash, 2 women in variations on the costume, a Kid Flash, a Captain Cold, and (just for fun) 2 Cheetaras.

Flash Costume Sightings at Comic-Con - Enjoy!

I also saw a couple of guys in off-the-rack Flash costumes like you'd find at a Halloween store.

Anyone else who was at the con: did you see any other Flashes that I missed?