Drive is the latest project for the Oscar nominated actress and the movie sees her join forces with Ryan Gosling.
Speaking to The Sunday Times the actress said: "I had nowhere to live in LA, and it was actually pretty awesome.
"I'd hang out with his wife and play with their babies, and when I wasn't filming, I'd make carrot cakes and bring them on set."
We haven't seen Mulligan on the big screen since Never Let Me Go at the beginning of the year - a movie that you really should check out if you get the chance.
But Drive isn't the only project on the horizon for the actress as Shame, which also stars Michael Fassbender, played at the Venice Film Festival last week.
She is currently filming The Great Gatsby in which she takes on the role of Daisy Buchanan alongside Leonardo DiCaprio.
Drive is released 23rd September.(Female First Uk)
