'Avatar' star gets honest about Kiri's arc in 'Fire and Ash'

Sigourney Weaver on Kiri's arc in 'Avatar: Fire and Ash'In Avatar, Sigourney Weaver originally played Dr. Grace Augustine. But later, she slipped into a teenage role of Kiri in Way of Water and Fire and Ash.Playing the role of a 15-year-old for a woman who is 76 is quite a challenge for the...