The 28-year-old actress
stars in the director's latest film, Cafe Society
, and joined him at Cannes
for the movie's premiere. "It’s really cool to work with a director who’s done so much, because he knows exactly what he wants," Lively tells Hamptons magazine
. "He also is really encouraging as to why he cast you, so he’ll say, ‘Say the dialogue that’s written and then you can improvise for a while.’ And his dialogue is so specific, and it’s speaking in a 1930s dialect and [with period] references, so it’s intimidating to think, 'Oh, let me just improvise there and hope that my words blend seamlessly alongside Woody Allen’s' -- which they clearly wouldn’t and don’t."