“It’s fun to dress up in a big sparkly number and a Cinderella-looking dress,” the 28-year-old expectant star of the thriller The Shallows told PEOPLE and Entertainment Weekly editorial director Jess Cagle exclusively for The Jess Cagle Interview video series.
“I came home to my baby [18-month-old daughter James] and she was like, ‘Wow.’ You know, because you just look like a Disney movie,” Lively says. “It’s fun to get to do that. Because when you’re a little girl you play dress-up, and now I get to do it in big-girl life too.
“There are lots of variables these days, but [it’s] fun to dress [under] the circumstances,” she adds with a laugh.