Feb 17, 2012 at 2:00 pm

Adam Levine Surprises Anne V in Las Vegas!

Adam Levine joins girlfriend Anne V and pals John Legend and Chrissy Teigen for a private after-after-party held at their penthouse of The Cosmopolitan in Las Vegas on Thursday night (February 16).

The happy couples danced into the middle of the night, hit up a private casino in the hotel, and ordered tons of food – sushi, french fries, pizza, chicken fingers, and giant pancakes.

The 32-year-old coach from The Voice flew into Vegas earlier in the evening and surprised Anne. (John and Chrissy were the ones to successfully help coordinate the surprise.)

“Adam walked into the Sports Illustrated Swimsuit party and Anne was shocked,” a friend of the couple tells JustJared.com. “Her jaw dropped to the floor and then she had the hugest smile on her face. They hugged, kissed, and had their arms wrapped around each other most of the night. It was such a sweet moment because it meant so much to her.”

Adam flew into Sin City with his Maroon 5 bandmate James Valentine – they’ll be flying to New Orleans to perform for Mardi Gras. They’ll first act as Grand Marshals on a float in the Endymion parade on Saturday and then give a blowout performance at the Louisiana Superdome.

Enjoy this exclusive set of photos of Bruno Mars, who performed awesome covers all night, SI cover girl Kate Upton with SI Swimsuit senior editor MJ Day, red-headed beauty Cintia Dicker, L.A. cutie Alyssa Miller, and a series of SI models eating – Brazilian beauty Izabel Goulart, Danish stunner Nina Agdal, Aussie babe Jessica Gomes, and Floridian SI rookie Crystal Renn.