Jacqueline Susann
Irving Mansfield
Florence Maybelle
Michael Hastings
Henry Marcus
Maury Manning
Debbie
Radio actor
Shecky
Brad Bradburn (as Christopher MacDonald)
Prof. Brainiac
Bambi Madison (as Dina Spybey)
Leslie Barnett
Passerby
Mort
Howie
Sylvia
Guy's doctor (as Daniel Ziskie)
Receptionist
Junior editor
Man with bicycle
Mrs. Ramirez
Nurse
Claude
Doorman
Manicurist
Buddy
Orderly #1
Eddie in Lindy's
Herbie
Waiter
Lissy Hastings
Mimsy Hastings
Aunt Abigail
Nelson Hastings
Teamster (as Charles Doucet)
Bob Shawcross (as John Moore)
Harry Gladrey
Irma Gladrey
Book Nook clerk
Jim Morrison
TV cook
Truman Capote
David
Saleswoman
Aristotle Onassis
Steve Lawrence
Eydie Gorme (as Debbie Gravitte)
Guy at 6
Guy at 14
Stage murderer (as Robin Andrew Wilcock)
Skeptical housewife
Wolf-whistle Teamster
Orderly #2
Self (archive footage) (uncredited)
Woman reading book in park (uncredited)
Moviegoer (uncredited)
Neely O'Hara in 'Valley of the Dolls' (archive footage) (uncredited)
Autistic Child (uncredited)
Helen Lawson in 'Valley of the Dolls' (archive footage) (uncredited)
Bookstore Clerk (uncredited)
Dog Walker (uncredited)
Doorman (uncredited)
Extra (uncredited)
#80 Evergrip / Hostess (uncredited)
Security Guard at Waldorf Astoria (uncredited)
Cop (uncredited)