Rolling Stones frontman SIR Mick Jagger is drinking Guinness in a desperate attempt to put on weight.

The 62-year-old rocker wants to fill out his famous skinny frame and is stuck at 63.5 kilograms (10 stone/140 pounds) - but finds the band's rigorous tour schedule and his energetic stage routine causes weight to drop off him.

He says, "I'm trying to put on two pounds. That's my ambition. But I've been doing so much working out and all that dancing."