Ashton Kutcher and budding writer [1] Cameron Diaz were back on the set of What Happens in Vegas [2] Wednesday and actually in...Vegas. In the movie they accidentally marry after a crazy night of partying, so those extra large drinks must get them into trouble. But, apparently it's not all work for Cameron in Vegas — she was spotted out last Saturday [3] "with a tall, dark-haired mystery male by her side," (who wasn't Bradley Cooper [4]) at Jet where she partied until 1 a.m. before gambling for a few more hours. Unfortunately, when you're a celebrity like Cameron, stories like that definitely don't stay in Vegas.

[4]

To see more of Ashton and Cameron in Vegas just

Flynet [5]