Kaitlin Olson

Profile Overview

Kaitlin Willow Olson McElhenney (born August 18, 1975) is an American actress and comedian. She is best known for her roles as Deandra "Sweet Dee" Reynolds in the FX/FXX comedy series It's Always Sunny in Philadelphia (since 2005) and Morgan Gillory in the ABC crime comedy drama series High Potential (since 2024).
Also on television, she has portrayed recurring characters such as Becky in the HBO sitcom Curb Your Enthusiasm (2000–2020) and Deborah "DJ" Vance Jr. in the HBO Max comedy-drama series Hacks (2021–2026). She played Mackenzie "Mickey" Molng, the lead role in the Fox comedy series The Mick (2017–2018). She has appeared in several comedy films, including Leap Year (2010), The Heat (2013), Finding Dory (2016), and Champions (2023).
Olson received her first Primetime Emmy Award nomination for her role as Cricket Melfi in the Quibi comedy series Flipped (2020), in the category of Outstanding Actress in a Short Form Comedy or Drama Series. She went on to receive three more Emmy nominations for Outstanding Guest Actress in a Comedy Series in 2022, 2024 and 2026 for her role in Hacks.