Sofia Vergara, Reese Witherspoon [1], and Ellen DeGeneres [2] had a hard time keeping it together during Monday's episode of The Ellen DeGeneres Show. The trio were in an almost constant state of laughter while acting in a faux-sitcom sketch called "The Three Sofias" about roommates who share the same name and accent as the Colombian-born actress. Reese and Sofia were on the show to promote their upcoming movie Hot Pursuit. In the comedy, which hits theaters on May 8, the blond beauty plays a police officer whose number one mission is to protect Vergara, a federal witness in her protective custody. Watch the funny clip above, then check out Reese crashing Sofia's recent date [3] night with her fiancé, Joe Manganiello.