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 comedy series It's Always Sunny in Philadelphia in 2005.
Hon började sin karriär i Groundlings, en improvisationsgrupp i Los Angeles, och hade småroller i flera TV-serier innan hon fick rollen som Deandra "Sweet Dee" Reynolds i komedin It's Always Sunny in Philadelphia 2005.