In 1985 , Cher formed the film production company Isis . Her next film , '' Mask '' ( 1985 ) , reached number two at the box office and was Cher 's first critical and commercial success as a leading actress . For her role as a drug addict biker with a teenage son who has a severe physical deformity , she won the Cannes Film Festival Award for Best Actress . During the making of the film , however , she clashed with director Peter Bogdanovich . She attended the 58th Academy Awards in a tarantula-like costume " to show her scorn for the ' system ' " , according to authors James Parish and Michael Pitts . The incident garnered her much publicity
58th Academy Awards
58th Academy Awards
Cher