Lynne Marie Stewart is an American actress and comedian, best known for her role as Miss Yvonne on the popular children's television show Pee-wee's Playhouse. Born on April 16, 1953, in Los Angeles, California, she has appeared in various television series and films throughout her career, showcasing her talent in both comedic and dramatic roles. In addition to her work on Pee-wee's Playhouse, Stewart has made guest appearances on numerous shows, including Friends and The King of Queens. She has also lent her voice to animated series, further demonstrating her versatility as a performer.