Lynne Marie Stewart (December 14, 1946 – February 21, 2025) was an American actress. She was widely known for her performance as Miss Yvonne, "the Most Beautiful Woman in Puppet Land," originating the role in the 1981 stage show The Pee-wee Herman Show. She continued to play Miss Yvonne on the CBS television show Pee-wee's Playhouse, the 2010 Los Angeles stage revival, and the Broadway production which opened in November 2010 at the Stephen Sondheim Theatre. Stewart was also known for her recurring role on the FX/FXX television series, It's Always Sunny in Philadelphia as Charlie Kelly's mother, Bonnie. (Via Wikipedia)