Kaitlin Olson and Rob McElhenney attend Premiere Screening of FX’s "It’s Always Sunny in Philadelphia" season seven and "The League" in Los Angeles

Cast members Kaitlin Olson (L) and Rob McElhenney attend the Premiere Screening of FX’s "It’s Always Sunny in Philadelphia" season seven and "The League" season three at the Cinerama Dome in the Hollywood section of Los Angeles on September 13, 2011. UPI/Phil McCarten