Madonna and Britney Spears will be dressed as 'bonadage mummies' in a special video that will be screened to fans on Madonna's world tour, it's been claimed.

Following confirmation earlier this week that Spears would film a spot for Madonna's Sticky & Sweet tour, which begins in Cardiff next month, reports today suggest that filming has already begun.

According to a source, the collaboration is “absolutely classic Madonna” and features some of the “raunchiest stuff she has ever done”.

“Britney and Madonna are unwrapped like mummies, to appear together almost naked apart from tiny leather bondage pants and knee-high boots.

"They then dance closely together, pressing their hands and bodies together,” they told the Sun newspaper.

“There will be big rows over whether it is sexy, shocking or both.”

Spears and Madonna famously kissed during an appearance at the MTV Video Music awards in 2003 and have shared a close relationship ever since.

(by Jason Gregory)