Sigourney Weaver changed her name from Susan because she was ''too tall'' for the moniker. She decided to swap her name when she was a teenager because she thought it better suited the way she looked. She was too tall…”It led to me changing my name from Susan to Sigourney at 13.” ''I felt too tall to have a short name like that and saw 'Sigourney' in F Scott Fitzgerald's book 'The Great Gatsby'.''Sigourney, now 62, admits her stature and unusual looks led to her suffering from a lack of confidence when she was a teenager and at the start of her acting career.