Who buys Sean Penns gun collection?

   Quite an evening was had by many celebrities in Hollywood who attended the Sean Penn fundraiser for Haiti on Saturday night.

   The relationship of Charlize Theron and Sean Penn went public, for one. They had been seen in Hawaii recently, but had not appeared ready to take their romance public.

  Surprisingly, Sean Penn announced that his 65 piece gun collection, made into an art piece, was up for auction. Theron's family was marred by gun violence when she was younger.

   Penn stated that "Jeff Koons will decommission and render inactive all of my cowardly killing machines."

    So who bought the collection, or art piece?  Anderson Cooper, who paid $1.4 million for the collection.