Conversation so far:
What is an example of one of Joan Leslie's early roles?
Joan Leslie's first film role was in Camille, a romantic drama starring Greta Garbo and Robert Taylor.
What year did Joan Leslie play the role of Camille?
Did Joan Leslie have trouble getting roles after Camille?
MGM had trouble finding suitable roles for Joan Leslie, and she was let go by the studio along with Deanna Durbin.
Who was Joan Leslie's agent during the time she was let go by MGM studios?
What other actors or actresses did Joan Leslie work with in her early career?
Joan Leslie worked with Greta Garbo, Robert Taylor, and Jimmy Lydon during her early career.
How was Joan Leslie received in her early roles?
At age 15, Joan Leslie was selected by a group of Hollywood directors as one of 13 baby stars of 1940.“

Question: How old was she when she started her Hollywood career?
Self-contained rewrite: How old was Joan Leslie when she started her Hollywood career?