Catherine O’Hara will make a posthumous appearance in Martin Short’s forthcoming Netflix documentary , “Marty, Life is Short.”

The late “Schitt’s Creek” star — who first met Short in the early ’70s while coming up in Toronto’s improv scene — made a brief cameo in the documentary’s trailer , which was released on Friday.

“I feel like he could improvise to eternity. Couldn’t he?” O’Hara — who conducted her interview before her death earlier this year — says in the teaser.

Catherine O’Hara will make a posthumous appearance in Martin Short’s forthcoming Netflix documentary, “Marty, Life is Short,” as pictured above. Courtesy of Netflix

O’Hara’s appearance was revealed after she made a brief cameo in the film’s trailer (pictured above), which was released Friday.…