MC Spears -- Britney Rocks Mic in Vegas

Britney Spears hightailed it to Las Vegas last night to host the opening of LAX Nightclub at the Luxor Casino. Come on in, y'all!


The platinum-haired pop tart arrived on the red carpet wearing a cute, white baby doll dress -- and a wig that looked sewn into the seams of her hat!

Once inside, the host with the most fake hair grabbed the mic to much applause -- and gave a measly, two-sentence introduction. As DJ AM spun records in the 26,000 square foot, two-story party palace, Britney was onstage dancing her heart out -- from her seat.

Littering the VIP section were heiress Nicky Hilton, "That 70s Show" alum Wilmer Valderrama, and "Mindfreak" of the week, Criss Angel.