Allison Williams on M3GAN and Chucky’s Twitter Beef (Exclusive)

Allison Williams chats with ET’s Ash Crossan at the premiere of 'M3GAN' in Los Angeles. Allison reacts to M3GAN starting beef with Chucky on Twitter and Taylor Swift giving the thumbs up to have her song, ‘It’s Nice to Have a Friend,’ featured in the movie’s trailer. 'M3GAN' hits theaters Jan. 6.