DWTS' Mark Ballas Celebrates in Las Vegas

In addition to his Dancing with the Stars win with Olympic-medalist skater Kristi Yamaguchi, Mark Ballas adds one more thing to the celebration, his 22nd birthday.

According to People, he took along longtime pal and fellow DWTS dancer Derek Hough to Las Vegas Friday to dance the weekend away on the VIP table. Hough is also celebrating his May 17 birthday.

Hough and dancing partner Shannon Elizabeth reportedly danced very close all weekend. People said they've been spotted sneaking kisses at a dinner at Bellagio's Fix.

To complete the celebration, Ballas and Hough brought on a three-tiered cake with a replica of the mirror ball trophy.

Speaking about his win on DWTS, Ballas told People that he was only a guide for Kristi, and that she deserved to win. "I spent more time breaking bad habits and starting from scratch. We were working eight to ten hours a day on that and I couldn't be more proud."

And Hough seconds. He said that Ballas "110 percent deserved to win it. He worked harder than anyone."