The stars came out in Hollywood last night for the premiere of action flick Iron Man, starring the incredible Robert Downey, Jr.!

Who showed up? Let's see: P. Diddy, Jon Voight, Stan Lee, Vince Vaughn, Ben Stiller, Jeff Bridges, Simon Pegg and co-star Terrence Howard, to name a few.

So what're ya gonna see this weekend - the Patrick Dempsey rom-com Made of Honor or Iron Man?