Actress Joely Fisher has released an emotional essay paying tribute to her late sister, ?Star Wars? star Carrie Fisher. ?You all lost Princess Leia and Carrie Fisher; I lost my hero, my mentor, my mirror,? Fisher wrote in a piece for the Hollywood Reporter. Joely also focused on her niece, Billie Lourd -- who herself opened up about the deaths of Carrie Fisher and Debbie Reynolds recently -- and how she will be there for the ?Scream Queens? star.