Britney Spears has risen ninety-five places to top the US Hot 100 Billboard chart with 'Womanizer'.

The singer's new single was downloaded 286,000 times, the biggest first week sales total for a female artist since the chart began counting downloads in 2003.

The previous record for the chart's biggest climb was Rihanna's 'Live Your Live', which climbed from number eighty to number one last week.

Spears last topped the chart with her debut single 'Baby One More Time', which was released in 1999.

As previously reported, Spears unveiled the video for 'Womanizer' last weekend.

The video, which was watched by seven million users in 48 hours, 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.

(by Jason Gregory)