Osbourne Siblings Party at CatHouse Opening

Two of the Osbourne siblings, Jack and Kelly, spent some time together at the opening of the new Las Vegas hotspot, the CatHouse, over the weekend. Mischa Barton was supposed to open the event, but dropped out after being convicted of a DUI. Other celebs at the CatHouse included Adrien Brody and rocker Tommy Lee.

Picture by WireImage