Britney Spears will be giving up the turkey and trimmings on Christmas Day this year (13), because she wants to stay in shape for her Las Vegas residency.

The Toxic hitmaker begins a two-year stint at the Planet Hollywood Resort in Sin City on 27 December (13), two days after Christmas Day, and has been working hard to get herself fit in time for the first show.

Discussing her gruelling work-out routine, in which she rehearses her dance routines five days a week and then spends the weekend at the gym, she reveals she will be avoiding Christmas treats this year.

Britney says, "It’s going to be really hard because I love food."