‘Pee-wee’s Playhouse’ star Lynne Marie Stewart dead at 78

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Actress Lynne Marie Stewart, best known for her roles in « Pee-wee’s Playhouse » and « It’s Always Sunny in Philadelphia, » has died. She was 78.

Stewart’s rep confirmed with Fox News Digital that the actress died on Friday. 

« Lynne was the most talented woman who loved the craft more than the reward, » Stewart’s rep shared. « She was a comedic genius and the most honorable person I have ever known. »

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Lynne Marie Stewart

Stewart’s rep confirmed with Fox News Digital that the actress died Friday.  (Michael Tullberg/Getty Images)

Stewart’s rep shared that the actress had just wrapped up filming « Dink » and « It’s Always Sunny in Philadelphia. » She noted that she was « exhausted » in December after taking on several television projects. 

Doctors additionally found a tumor in Stewart, as her rep told her loved ones were all « in disbelief. »

The cause of death is unknown. 

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American actress Lynne Marie Stewart beside actor and comedian Paul Reubens in CBS children's TV series 'Pee-wee's Playhouse.'

American actress Lynne Marie Stewart beside actor and comedian Paul Reubens in CBS children’s TV series ‘Pee-wee’s Playhouse.’ (Brian D. McLaughlin/Michael Ochs Archives/Getty Images)

Stewart’s friend paid tribute to the late actress on social media with a heartfelt photo. The friends were seen hugging and all smiles.

« My heart is breaking upon hearing the news of my dear friend Lynne Stewart’s passing, » actress Cassandra « Elvira » Peterson wrote on Instagram.

« One of the kindest, sweetest, funniest women who ever lived. The iconic Miss Yvonne of Pee-wee’s Playhouse: She’ll always be ‘the most beautiful woman in Puppetland.’ »

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Born Dec. 14, 1946, Stewart was raised in Los Angeles. 

Stewart made her film debut in Jack Nicholson’s 1971 film, « Drive, He Said. »

She was best known for being an actress and writer for popular film and television shows such as 1987’s « The Running Man, » 1973’s « American Graffiti » and « Pee-wee’s Big Adventure. »

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Stewart portrayed Miss Yvonne in "Pee-wee’s Playhouse" from 1986 to 1990, alongside the star and creator Paul Reubens. 

Stewart portrayed Miss Yvonne in « Pee-wee’s Playhouse » from 1986 to 1990, alongside the star and creator Paul Reubens.  (Brian D. McLaughlin/Michael Ochs Archives/Getty Images)

Stewart portrayed Miss Yvonne in « Pee-wee’s Playhouse » from 1986 to 1990, alongside the star and creator Paul Reubens. 

She additionally worked on the other « Pee-wee’s Playhouse » franchises, including « Big Top Pee-wee » in 1988.

The actress met Reubens in the 1970s at the comedy troupe « Groundlings, » where she was a member, according to Extra.

maya rudolph tribute

Other celebrities who paid tribute to Stewart included comedian Maya Rudolph. Stewart portrayed Rudolph’s mother in the 2011 comedy movie « Bridesmaids. » (Maya Rudolph/Instagram/Frazer Harrison/Getty Images)

Stewart made several TV appearances on Cindy William’s iconic sitcom « Laverne & Shirley » from 1977 to 1983. She voiced Williams’ character in the animated series « Laverne & Shirley in the Army, » and as part of the « Mork & Mindy/Laverne & Shirley/Fonz Hour » in 1982.

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Lynne Marie Stewart

Before her death, Stewart’s most recent well-recognized role was in « It’s Always Sunny in Philadelphia » as Charlie Kenny’s mother, Bonnie.  (Lila Seeley/Getty Images)

Other celebrities who paid tribute to Stewart included comedian Maya Rudolph. Stewart portrayed Rudolph’s mother in the 2011 comedy movie « Bridesmaids. »

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Rudolph shared on her Instagram Story a signed photo of Stewart dressed up as Miss Yvonne. She added pink heart emojis to her tribute.

Before her death, Stewart’s most recent well-recognized role was in « It’s Always Sunny in Philadelphia » as Charlie Kenny’s mother, Bonnie.