Gloria Katz, ‘American Graffiti’ screenwriter and ‘Star Wars’ script doctor, dies at 76

Hollywood screenwriter Gloria Katz — who co-wrote “American Graffiti” and helped give Princess Leia her power in “Star Wars” — has died. She was 76.

Willard Huyck, Katz’s husband and longtime collaborator, told the Hollywood Reporter that she died Sunday, their 49th wedding anniversary, at Cedars-Sinai…