Rob Mac and Kaitlin Olson are hard at work on the new season of It’s Always Sunny in Philadelphia!
The married co-stars ran through the streets together as they filmed scenes for the upcoming 18th season of the FX comedy series on Wednesday (June 17) in Los Angeles.
Rob, 49, was seen carrying a black fuzzy hat as Kaitlin, 50, held on tight to a jug with an orange liquid in it, which she occasionally took chugs of.
Also seen on set was fellow cast member Glenn Howerton, who was seemingly directing the scene.
It’s Always Sunny, which also stars Charlie Day and Danny DeVito, first premiered back in 2005. When season 15 premiered in December 2021, the show became the longest-running American live-action sitcom (in terms of total seasons).
The 17th and most recent season aired in the summer of 2025 and as of right now, season 18 doesn’t have a premiere date.
In an interview from last year, Glen explained why he seriously considered walking away from It’s Always Sunny in Philadelphia.
Browse through the gallery below for more photos of the stars on set…
Posted To:Candid Photos glenn howerton It’s Always Sunny in Philadelphia Kaitlin Olson Rob Mac