Ke$ha shocked fans when she drank blood from a heart at her recent concert.

The singer apparently drank the blood whilst performing at the Future Musical Festival in Sydney last Thursday (March 10).

Ke$ha performed the stunt during the vampire themed track 'The Harold Song', reports Australia's Daily Telegraph.

This isn’t the first time the singer has been caught up in controversy after a clip appeared on YouTube of her defacing Hollywood sign last year.

Her publisher has yet to comment on the incident.

Meanwhile, Ke$ha's former managers want the lawsuit against her sorted before she runs out of cash, it has been reported.

(by Holly Frith)