Lily Allen has announced that she will be performing at next year's Glastonbury festival.

"It got confirmed yesterday," the singer told Nick Grimshaw on his Radio 1 Breakfast Show this morning. "I'll be doing 16 weeks of festivals over the summer and then tour." She said Glastonbury would be her first "big" gig of 2014 and added: "It's the best festival, I think – that, and Fuji Rock in Japan."

Allen's comeback has been somewhat turbulent since she released her single Hard Out Here and its accompanying video. "What I see is the black female body, anonymous and sexualised," wrote Suzanne Moore in the Guardian, "grinding away to make the rent."

EMBED VIDEO: http://www.muzu.tv/lilyallen/hard-out-here-music-video/2111106/

Allen has since defended her video, stating: "If anyone thinks for a second that I requested specific ethnicities for the video, they're wrong." The idea behind the video, which pokes fun at promo clips by Miley Cyrus and Robin Thicke, was partly inspired by how close the 28-year-old singer came to having extensive plastic surgery to get rid of her "mummy-tummy" following her first child. "Nobody's immune to the pressure to look thin," she told Observer Magazine.

The singer is the first act confirmed for this year's festival, although where she will appear on the bill has not yet been revealed.

The Guardian is Glastonbury festival's media partner