What Happens in Vegas is a 2008 American romantic comedy film from 20th Century Fox starring Cameron Diaz and Ashton Kutcher. The title is based on the Las Vegas. What Happens in Vegas summary of box office results, charts and release information and related links. Great Commercial Know the Code and sign the oath (What Happens Here Stays Here) at LasVegas.com and enter for your chance to win a trip to Las Vegas. Search for What Happens in Vegas on Amazon.com. Connect with IMDb. Share this Rating. Title: What Happens in Vegas (2008) 6.1 /10. Want to share IMDb. Las Vegas' What Happens Here, Stays Here slogan is one of the more famous taglines in modern tourism marketing and one of the most quoted, talked about, and. What Happens in Vegas Trailer (HD). Release Date: May 16th, 2008 (wide) What Happens in Vegas Theatrical Trailer What Happen in Vegas Trailer What Happen. What Happens in Vegas has mediocre direction and a strained screenplay, so how can it be any good? What carries the film is its two stars. What Happens in Vegas (2008) on IMDb: Set in Sin City, story revolves around two people who discover they've gotten married following a night of debauchery, with one. What Happens In Vegas, Stays In Vegas ('Cept Herpes, that shit stays with you for life).