Danny DeVito in Frank's Pretty Woman (2011)

Charlie Day and Erin Matthews in Frank's Pretty Woman (2011)

Danny DeVito and Charlie Day in It's Always Sunny in Philadelphia (2005)

Charlie Day and Kaitlin Olson in Frank's Pretty Woman (2011)

Alanna Ubach in It's Always Sunny in Philadelphia (2005)

Danny DeVito, Alanna Ubach, and Glenn Howerton in It's Always Sunny in Philadelphia (2005)

Danny DeVito, Charlie Day, Rob McElhenney, Kaitlin Olson, and Glenn Howerton in Frank's Pretty Woman (2011)

Charlie Day, Rob McElhenney, Kaitlin Olson, and Glenn Howerton in Frank's Pretty Woman (2011)

Danny DeVito, Alanna Ubach, Charlie Day, Rob McElhenney, Kaitlin Olson, and Glenn Howerton in Frank's Pretty Woman (2011)

Danny DeVito and Alanna Ubach in Frank's Pretty Woman (2011)