Tiger's Alleged Mistress #3 -- Back on the Job

12/22/2009 2:20 AM PST

Tiger's Alleged Mistress #3 -- Back on the Job

Tiger Woods' alleged mistress #3 has finally returned to the Vegas club scene -- and this weekend she was already kickin' it with another big star.

Kalika Moquin -- who has vehemently denied an affair with the philandering golf pro -- texted away at The Bank nightclub during a birthday party for "Twilight" star Jackson Rathbone Saturday night. We're told Kalika -- who's now working as a VIP host at the club -- was all business that night.

But Sunday, she let it all hang out -- literally -- donning a breastacular Mrs. Claus costume for "The Annual Vegas Socialite Christmas Party."

Wonder what she's getting in her stocking this year?