Premise: Kaitlin Olson . She began her career in the Groundlings , an improvisational group in Los Angeles , California , and had minor roles in several television series before being cast as Deandra `` Sweet Dee '' Reynolds on the FX black comedy series It 's Always Sunny in Philadelphia in 2005 . Beginning in 2017 , she stars as Mickey on the Fox comedy series The Mick . The Mick is an American sitcom television series broadcast on Fox .
Hypothesis: Kaitlin Olson had roles in television.
Label: ENTAILMENT