Luke's twin sister is Leia, a four-letter name. Leia is a major character in the Star Wars franchise, first appearing in the original 1977 film. She is the daughter of Anakin Skywalker and Padme Amidala, and the twin sister of Luke Skywalker. She is a member of the Imperial Royal Family and a leader of the Rebel Alliance. Leia is a strong-willed, independent woman who is determined to fight for freedom and justice.