OK! Exclusive: Kaitlin Olson & Rob McElhenney Wed

It must always be sunny in Philadelphia!  Stars of the F/X show It's Always Sunny in Philadelphia Kaitlin Olson and Rob McElhenney have tied the knot in an intimate Malibu ceremony, Olson's rep confirms to OK!.

McElhenney, a Philly native who created and executive produces the show as well as stars as "Mac", and Kaitlin, who plays "Sweet Dee," dated for two years before making it official.

Kaitlin and Rob are the second couple to say 'I Do' on the Philadelphia set.  cast members Charlie Day and Mary Elizabeth Ellis married in 2006!