VIDEO : Billie Lourd Stands in for Carrie Fisher in Star Wars Reunion Photos

A moving, behind the scenes photo at Star Wars Celebration of Mark Hamill, Harrison Ford and the late Carrie Fisher?s daughter, Billie Lourd, is stirring up fans? emotions as it makes the rounds online. While fans of the film saga have been excited for months leading up this weekend?s Celebration ? which among other things, reunited Hamill, Ford and Star Wars creator George Lucas ? the anticipation has been accompanied by underpinnings of sadness, due to the tragic passing of Fisher from a heart attack last December.