Actor Daniel Day-Lewis is so determined to stay in character for his upcoming role in Nine - he can’t stop speaking Italian.

The Oscar-winner plays lady-loving director Guido Contini in the movie musical, opposite a star-studded cast including Nicole Kidman, Sophia Loren and Penelope Cruz.

And he’s left his famous co-stars tongue tied, refusing to speak anything but his character’s native language to those on set.

A source told the New York Daily News: “He’s always waving his arms and telling the chef to whip up some pasta.”