Adele has revealed she is to headline at this year's Glastonbury Festival.The singer broke the news to fans while performing live on stage at London's O2 arena.

The festival's Twitter page confirmed Adele will headline on Saturday night at the festival in Worthy Farm, Somerset, with a post from organiser Emily Eavis.

Rock band Muse have also been confirmed as one of the headliners.The Supermassive Black Hole singers will make history by performing on the Pyramid Stage on the Friday night.

They will become the first band ever to have headlined every night of the festival, having headlined Saturday night in 2010 and Sunday in 2004.