Lynne Marie Stewart, "It's Always Sunny in Philadelphia," "Pee-wee's Playhouse" actor, dies at age 78

Lynne Marie Stewart, who starred on-screen in productions like "Pee-wee's Playhouse" and "It's Always Sunny in Philadelphia," died at age 78 on Friday after a quick illness, a spokesperson told CBS News on Saturday.

Stewart was born on Dec. 14, 1946, in Los Angeles, California, according to her IMDb page.

The 78-year-old actor starred as Miss Yvonne originally in the 1981 film, "The Pee-Wee Herman Show" and went on to play the character on the CBS Saturday morning show, "Pee-wee's Playhouse." The program ran from 1986-1991.