Why Always Sunny's Original Dee Actress Was Replaced After The Pilot

Sweet Dee is one of the key characters in It's Always Sunny in Philadelphia, but the actress that plays Dee was actually replaced after the series' pilot. Kaitlin Olson played Dee Reynolds throughout every season of the TV show, with her being one of the funniest members of the show's gang of five. However, It's Always Sunny in Philadelphia was almost very different, with Kaitlin Olson not joining the show until after the series was greenlit.