(L-R) Actors Kaitlin Olson, Rob McElhenney, Charlie Day and Danny DeVito arrive at FX's Comedy Night for the premiere screenings of "It's Always Sunny in Philadelphia" and "The League" at the Cinerama Dome on September 14, 2010 in Los Angeles, California.
(September 13, 2010 - Source: Kevin Winter/Getty Images North America) see more angles »

Rob McElhenney Button Down Shirt

Rob keeps it casual on Comedy Night in a plaid button-down and khakis.
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