Kaitlin Olson is an American actress and comedian best known for her role as Dee Reynolds on the sitcom "It's Always Sunny in Philadelphia," a performance she has played since the show's debut in 2005. Her portrayal of the haplessly optimistic yet often misguided character has garnered her a dedicated fanbase and critical praise. Olson's comedic talent extends beyond this role, showcasing her versatility through various television appearances and comedic projects. Kaitlin Olson was born on August 18, 1975, in Portland, Oregon. She developed an interest in acting and comedy early in her life, eventually studying theater and comedy during her college years. Olson's career started with smaller roles and stand-up performances before she landed her breakout role on "It's Always Sunny in Philadelphia." Her work on the show has made her a prominent figure in comedy television and allowed her to demonstrate her sharp comedic timing and engaging personality. Throughout her career, Olson has also appeared in other TV shows and films, often playing humorous and relatable characters. Her talent and comedic presence have made her a well-respected figure in the entertainment industry. In addition to her acting pursuits, Olson is known for her friendly and down-to-earth personality, which has endeared her to fans and colleagues alike. She remains a significant part of the comedy scene and continues to entertain audiences with her performances.