Xmas killer Beyonce Knowles

Beyonce Knowles poses at the premiere of "Cadillac Records" in New York December 1, 2008.  [Agencies]

Beyonce Knowles is worried she might kill her family when she cooks Christmas dinner.

The 'Cadillac Records' star - who is married to music mogul Jay-Z - has planned a festive feast for her closest relatives but fears her lack of culinary skills may prove to be a serious problem.

She said: "One thing I am doing for the first time is cooking. But I'm the worst! I've been working since I was 13. I've been touring. I haven't had the time to be at home and learn the simple things.

The former Destiny's Child star also revealed she never sings over Christmas because she likes to have a break her job.

She is quoted by website Inquirer.net as saying: "Singing is the last thing I want to do. I just want to relax. Usually, I want to be spoiled. I can have my socks on and watch TV. But this time, I'm going to try to pitch in and make more than ice water - what I am very good at!"