CAMERON DIAZ greeted her fans and the press for the first time since the sad and sudden death of her father, EMILIO, two weeks ago from pneumonia. Cameron hit the red carpet in Hollywood to premiere her new romantic comedy 'What Happens in Vegas,' in theaters May 9, and ET 's KEVIN FRAZIER was there.

In 'What Happens in Vegas,' Cameron and Ashton Kutcher play two down-on-their-luck strangers who hook up in Vegas and wake up the next day to find they got married! The one hitch, however, is that they can't stand each other. But when Ashton wins big playing slots with Cameron's quarter, the two find themselves connected by cash -- and scheming to get one another's money. Sentenced to "six months hard marriage" by a judge (DENNIS MILLER), can these two learn to get along -- and fall in love?