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.

Celine Dion, Billy Porter, Lena Waithe and more celebrities take over the Met Gala red carpet and explore the theme, "Notes on Fashion." Josmar Taveras, USA TODAY

No one can top Rihanna at the Met Gala.

AH, the Met Gala. The one day of the year celebs are free to go full Hunger Games on us: They’re the flamboyantly fashioned residents of The Capitol, and the rest of us are all the plebs from some far-flung district peering in at their lavish displays of wealth and excess.