Jones plays a chef in the romantic film Mostly Martha

The Swansea-born actress worked for a week as a chef in a Michelin-starred New York restaurant to prepare for a role in a forthcoming film.

She spent her time saut�ing and chopping in the kitchen, and even made a brief appearance as a waitress.

Chef Michael White told People magazine she was a "great garnisher".

Mr White owns the restaurant Fiamma - an Italian eaterie in Manhattan's trendy SoHo district - which Jones chose to gain experience for her role as a top chef in the romantic film Mostly Martha.

A few people said to her 'You look so much like Catherine Zeta Jones' Restaurant employee

Mr White told the magazine: "She's been doing a lot in the kitchen - saut�ing and cutting.

"She's a great garnisher. Drizzling oil and balsamic on plates - she does a nice job."

Jones even managed to serve in the restaurant without people realising who she was, according to co-workers.

One employee said: "One night she did a little serving.

"A few people said to her, 'You look so much like Catherine Zeta Jones.' "And she said, 'Oh, I get that all the time'."