"It's Always Sunny in Philadelphia" Premiere Screening Season Seven Cast...

Danny DeVito, Mary Elizabeth Ellis, Kaitlin Olson, Charlie Day, Rob McElhenney at "It's Always Sunny in Philadelphia" premiere red carpet arrivals at Cinerama Dome in Los Angeles, Ca USA September 13, 2011 - It's Always Sunny in Philapdelphia season seven premieres on Thursday September 15 at 10pm e/p on FX

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