Spears plays waitress in new video

Britney Spears is back to work on the set of her music video for her comeback song 'Womanizer' - as a waitress.

The singer was photographed wearing a black wig and red lipstick while filming on Wednesday at a lounge in downtown Los Angeles.

She was accompanied by a troupe of dancers, who arrived at the shoot dressed in waiter uniforms including white dress shirts, skinny ties, and black pants or leggings.

The video is being directed by Joseph Kahn, who also directed Spears' videos for 'Toxic' and 'Stronger'.

'Womanizer' is the first single from Spears' upcoming album, 'Circus'. It is expected for release at the end of the month.