Who Rocks The House???

John Mayer rocks the house!

The “sensitive” rocker let his wild side out at the 2 year anniversary party for Stereo nightclub in NYC on Wednesday.

The party drew the likes of Ashlee Simpson and Pete Wentz, who DJd.

The Naked Cowboy and Gym Class Heroes were there and so was Star Jones. WTF???

Star Jones loves a good party!

[Photo via Getty Images.]