Glenn Howerton Photos

Glenn Howerton and Kaitlin Olson at the premiere of "It's Always Sunny In Philadelphia."

Glenn Howerton, Charlie Day and Rob McElhenney at the premiere of "It's Always Sunny In Philadelphia."

Glenn Howerton and A.J. Tesler at the Independent Television Festival Opening Night party.

Glenn Howerton at the premiere of "Must Love Dogs."

Glenn Howerton at the screening of "Over There."

Glenn Howerton at the Fox All-Star Television Critics Association party.

Jill Latiano and Glenn Howerton at the 3rd Annual Hot In Hollywood Event.

Charlie Day and Glenn Howerton at the Comic Con 2008.

Glenn Howerton at the Season 4 DVD launch party of "It's Always Sunny In Philadelphia."

Glenn Howerton at the Season 4 DVD launch party of "It's Always Sunny In Philadelphia."

Charlie Day, Glenn Howerton and Rob McElhenney at the Comic Con 2008.

Glenn Howerton at the premiere of "Pineapple Express."

Producer Charlie Day and Glenn Howerton at the Independent TV Festival Screening of "It's Always Sunny In Philadelphia."

Glenn Howerton at the Comic Con 2008.

A.J Tesler, Producer Charlie Day and Glenn Howerton at the Independent TV Festival Screening of "It's Always Sunny In Philadelphia."

Producer Charlie Day, Mary Elizabeth Ellis and Glenn Howerton at the Independent TV Festival Screening of "It's Always Sunny In Philadelphia."

Glenn Howerton and Ron McElhenney at the FOX All-Star Party.

Glenn Howerton and Rob McElhenney at the Comic Con 2008.

Glenn Howerton at the FOX All-Star Party.

Glenn Howerton at the FOX All-Star Party.

Glenn Howerton at SiriusXM Studios in New York City.