Britney Spears has been digitally slimmed down in the video for new single, Piece Of Me.

The promo features Britney and a group of Brit-a-likes evading the paparazzi by wearing matching wigs as they hit up a Hollywood club.

Whilst the 26-year-old singer looks super-toned in the final cut, a leaked unedited version of the video reveals that much of the $250,000 budget must of gone on digitally removing Brit's wobbly bits

Despite having gained some weight since her chart-topping glory days, director Wayne Isham insists Britney was as "beautiful" as ever on set.

He said: "On set she was very professional, excited to work and beautiful as always. I was impressed with her focus as she choreographed the dance herself. Her endurance was remarkable, as we had a long day."

Wayne also praised the pop wreck for her "amazing" stamina.

He said: "She almost outlasted me, which is amazing! It was a pleasure to work with her again."

Check out the before and after pics below.