Whether you're a fan of Britney Spears or not, one indisputable fact is that her song 'Toxic' is a stone-cold modern pop classic. End of.

However, if you're faithful to the original and dismiss all covers and interepretations of Britney's 2003 hit, you might not be too fond of Madonna's take on it.

Madge celebrated Britney's 35th birthday the other day by performing an eerie cover of 'Toxic' during a fundraising gig for Malawi that raised $7.5 million the other night.

Whether her musical endeavour was as successful is another matter...

Watch it below: