Katy Perry in a Burger Costume Kinda Turned On Celine Dion at Met Gala

Celine Dion's got a thing for hot beef patties, or at least hot beef on Katy Perry -- 'cause she was jonesin' hard when she spotted Katy's Met Gala costume. Queen Celine was making her way through the Standard Line Hotel Monday night after the Gala…