MEN IN BLACK II star Rosario Dawson has turned her hunky boyfriend into a knitting champion after teaching him how to make scarves.

Former SEX + The City hunk Jason Lewis was fascinated when the actress knitted him a scarf in less than a day and insisted she teach him.

Dawson says, "I left all my stuff, my needles with him and he calls me up and says, 'Baby, guess what I'm doing... I'm knitting,' and he's really good.

"He makes hats and it's so cute to watch this big guy (knitting).

"We were actually taking a flight from New York to LA and he was making this hat, and Billy Bob Thornton was on the flight and he was like, 'Oh my God, that's an amazing hat, where did you get it?' and Jason was like, 'I made it.'"