“I was like, ‘I've been working on my legs. I’m trying to get stronger in my legs.’ She’s like, ‘Forget that, worry about your core strength.’ I was like, ‘OK, I'll do more sit ups,’” Robbie recalled, adding that she did at least 100 sit ups a day.
They paid off as the role was very physical both on and off the ice.
“It’s amazing having a costar like Sebastian [Stan], someone you have complete trust with,” she said. “Same with Allison [Janney]. We had a lot of physical scenes and Craig [Gillespie], our director, really created a safe place on set.”
Janney recently gushed to ET about Robbie and her performance at the 2017 Hollywood Film Awards. Watch the exclusive interview below!