Before entering Club SI in Las Vegas, 2012 Sports Illustrated Swimsuit models discuss the issue and launch week. For more photos and videos of Kate Upton, Anne V, Chrissy Teigen, Bar Refaeli and the other sexy SI Swimsuit Models go to http://si.com/swimsuit

SI Swimsuit models walk the Red Carpet before the Swimsuit launch party in Las Vegas. For more photos and videos of Kate Upton and the other 17 Sexy SI Swimsuit Models go to http://si.com/swimsuit

Take a sneak peak at New York's Most Glamorous Party: The SI Swimsuit 2012 Launch Party! Stay tuned for more videos featuring the SI Swimsuit 2012 models during the launch week.