Kaitlin Olson is officially in Dee mode, and Rob Mac confirms It's Always Sunny in Philadelphia Season 18 will have more than eight episodes.

We might be getting a Mac (Rob Mac)/Dee (Kaitlin Olson) smackdown at some point during FXX's It's Always Sunny in Philadelphia Season 18.

The next time you see Sweet Dee take a tumble on It's Always Sunny in Philadelphia, remember that it might be Kaitlin Olson doing the stunt herself.

The Gang should totally visit Morgan in L.A. soon. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. It's Always Sunny fans have bemoaned recent ...

Rob McElhenney as Ronald 'Mac' McDonald, Kaitlin Olson as Deandra 'Sweet Dee' Reynolds, Charlie Day as Charlie Kelly, Danny DeVito as Frank Reynolds, and Glenn Howerton as Dennis Reynolds on 'It's ...