Mariah Carey -- Diva Las Vegas! And She Don't Come Cheap (TMZ TV)

Mariah Carey is setting up shop at Caesars Palace, and you gotta figure she's pulling in at least as much dough as Britney Spears to do it -- which means an epic shopping spree is in the making.

Much like winter on "Game of Thrones" ... Mimi is coming, Las Vegas! You've been warned.