详细介绍：Kaitlin Willow Olson (born August 18, 1975) is an American actress, producer and comedian. She began her career in the Groundlings, an impro…Kaitlin Willow Olson (born August 18, 1975) is an American actress, producer and comedian. 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.详情