held an event honoring celebrities devoted to charity and activism in NYC the same night as the "Sex and the City 2" premiere -- and the girls actually made it ... kinda, sorta.

While the real Sarah Jessica Parker, Cynthia Nixon, Kim Cattrall and Kristin Davis were a 'lil busy, a few drag queens gladly took their place on the red carpet. (Shop "Sex and the City" style!)

"The Office" star Briam Baumgartner, "90210's" Tristan Wilds, "Vampire Diaries" stars Sara Canning and Zach Roerig were also on hand for the event -- which had a performance by the Backstreet Boys.

Check out all the pics -- and vote for you fav celebs over at the official site!