Mick Jagger engaged to L'Wren Scott?

Photorazzi / Tom Walck

Sir Mick Jagger's long-term girlfriend L'Wren Scott has sparked rumours that the pair are engaged after she was spotted wearing a tell-tale ring.

The former model, who has been dating Jagger for five years, was reportedly wearing a diamond and sapphire ring at an Indian music festival at the weekend.

The Rolling Stones frontman has been married twice before - to Bianca Perez Morena de Macias and Jerry Hall - but he has previously dismissed rumours he would make his stylist partner his third wife.