Kate Moss reportedly stormed out of her friend's birthday party after being struck on the forehead by an ice cube.

The supermodel was celebrating party planner Fran Cutler's 44th birthday with a group of pals at London's Wardour Club when a playful ice fight broke out.

However, the mood darkened when Kate was hit on the head by a flying lump of ice leaving a huge bump.

The culprit was believed to be a member of British rock group Kasabian. One onlooker said: "Kate thought the ice fight was hilarious at first, but when one bit of ice hit her really hard her mood changed. She was furious and left."