Conversation so far:
What roles did Carroll Baker play to make her a sex symbol?
Baker became a sex symbol after appearing as a hedonistic widow in The Carpetbaggers.
What was The Carpetbaggers about?
Jonas Cord's a disagreeable young tycoon who's building planes, directing films and catting around on the corporate make, in the 1930's Hollywood.
In what year was The Carpetbaggers filmed?
Filming started on June 4, 1963.
Were there any other films that considered Caroll Baker a sex symbol besides Carpetbaggers?
She was subsequently cast by Levine in the title roles of two 1965 potboilers— Sylvia, as an ex-prostitute and con artist, and as Jean Harlow in Harlow.
What happens in Sylvia?
A private detective (George Maharis) falls in love with a poet (Carroll Baker) whose shady past he has been hired to check.
What happened to Carroll Baker in 1964?
Based on her Carpetbaggers performance, Levine began to develop Baker as a movie sex symbol, and she appeared posing in the December 1964 issue of Playboy.

Question: Was 1964 the only time she was in Playboy?
Self-contained rewrite: Was 1964 the only time Caroll Baker was in Playboy?