Stage and screen actress who was the younger sister of famous striptease artist Gypsy Rose Lee, whose memoir inspired Gypsy, a popular Broadway musical. Havoc was the basis for the character of 'Baby June' in the same musical.
As a child, she was a performer on the vaudeville circuit. She first appeared on Broadway in a 1936 production of Forbidden Melody.
Her film credits include No Time for Love, Follow the Sun, and The Iron Curtain.
Her mother, Rose Thompson Hovick, pushed both Havoc and her sister, Gypsy Rose Lee (Rose Louise Hovick), into show business.
She was a close friend of fellow actresses Celeste Holm and Betty Grable.