The Hoff was there, chatting with Katy Perry. Lindsay Lohan was there too, in her sexy orange jumpsuit. Ziggy Stardust danced with members of Run DMC.
As predicted, there were multiple Elvii (Costello and Presley) and a whole lot of people dressed like Bret Michaels.
And we were there too, staying long enough to catch the announcement that Planned Parenthood of Houston & Southeast Texas will soon be merging with Planned Parenthood of Lousiana to form Planned Parenthood Gulf Coast.
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See our pictures of the rock star costumes and gets some ideas for Halloween in the slideshow.