Who directed the film "What Happens in Vegas" that Kryten Ritter had a role in?
Krysten Ritter:  She has appeared in films such as "What Happens in Vegas" (2008), "27 Dresses" (2008), "Confessions of a Shopaholic" (2009), "She's Out of My League" (2010), "Veronica Mars" (2014), and "Big Eyes" (2014). What Happens in Vegas: What Happens in Vegas is a 2008 American comedy film directed by Tom Vaughan, written by Dana Fox and starring Cameron Diaz and Ashton Kutcher.
Tom Vaughan