Zoe Saldaña Teases 'Sad' and ‘Bittersweet’ ‘Guardians of the Galaxy Vol. 3’ (Exclusive)

Zoe Saldaña chats with ET's Nischelle Turner in London at the premiere of 'Avatar: The Way of Water.’ The actress reacts to having her husband Marco Perego Saldaña’s support at the film's premiere. She also teases how ‘sad’ and ‘bittersweet’ it is ending the Marvel franchise with ‘Guardians of the Galaxy Vol. 3.’ 'Avatar: The Way of Water' flies into theaters Dec. 16.