Kaitlin Willow Olson (born August 18, 1975) is an American actress, producer, and comedian. She started her career with the Groundlings, an improvisational group in Los Angeles, and had minor television roles before being cast as Deandra "Sweet Dee" Reynolds on the FX comedy series It's Always Sunny in Philadelphia in 2005.
Olson has appeared in films such as Leap Year (2010) and The Heat (2013), and voiced Destiny in Finding Dory (2016). She also played the lead role of Mackenzie "Mickey" Molng for two seasons on the Fox comedy series The Mick.
United States
