The Sports Illustrated Swimsuit Edition celebration made its way to Las Vegas last night. Kate Upton, Chrissy Teigen, and Anne V were just a few of the ladies that traveled to Sin City after attending the NYC SI bash on Tuesday. Chrissy joined a few other models at Planet Hollywood, where they cemented their handprints in honor of the latest issue. Kate's been front and center since it was revealed on Valentine's Day that she's the 2012 SI Swimsuit Edition cover girl, though now her love life is also in the spotlight. It's been rumored that Kate is dating Mark Sanchez, but she wouldn't confirm the news when asked directly on an episode of The Ellen DeGeneres Show, which will air today.