Carey Mulligan was shocked to hear she was "much fatter" when she starred in Drive.
The British actress featured in Nicolas Winding Refn's crime drama alongside Ryan Gosling. Carey formed a strong bond with the outspoken film director at the time.
The blonde beauty is starring in upcoming romance The Great Gatsby, and has slimmed down for the role with Pilates classes.
The 27-year-old star has joked that Refn was taken aback by her newly-slimmed down figure when he saw her.
"He glanced over his shoulder, turned back and went, 'Ah, Carey. You were much fatter last time we met," she quipped in an interview with AnOther magazine's October issue.
"I thought, 'Sweet! OK, you're going to be honest.' But I love him. I ended up moving in with him and his family when I was making Drive because I had nowhere to live."
The Great Gatsby remake also stars Leonardo DiCaprio, Tobey Maguire, Joel Edgerton and Isla Fisher.
Carey - who plays Daisy Buchanan in the Baz Luhrmann movie - insists the cast were determined to look in great shape for the film.
"[We were] pretty well-behaved and going to the gym," she added.
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