And, this is interesting ... with all the Facebook drama, guess who also showed up -- the Winklevoss bros!!! They're dressed as outta-this-world astronauts. And, Olivia Jade and sis, Isabella, showed up in "Black Swan" costumes, although they sure missed an opportunity, right? Rowers would have been awesome!!!
Beck showed up as a cowboy, and Simon Rex got into a "Top Gun" getup at another party deep in the Hollywood Hills. "13 Reasons Why" actor, Ross Butler, kept things honest as the sheriff.