The video for Britney Spears' new single 'Womanizer' has been watched by seven million people in just two days, it's been revealed.

The video, which was made available on YouTube on Saturday, features a number of suggestive scenes, including one where the singer appears naked in a sauna.

In other scenes, Spears dresses up as a secretary and roller-skating waitress.

Speaking to the Daily Star newspaper, an unnamed source described the video as “an amazing success”.

"Brit still has a lot of fans and everyone wants to see her back to her best. Other people are checking it out to see if it's a car crash but loving it so much they are watching it again and again,” they added. 

The track is the first song to be taken from Spears' new album 'Circus', which is released on December 2nd, her 27th birthday.

You can see stills from the video below.