Adele will headline Saturday night at Glastonbury Festival 2016

Singer Adele has been confirmed as the final headlining act for this year's Glastonbury Festival, taking the Saturday night slot on the Pyramid Stage.

The 27-year-old singer made the announcement during her sold-out show at London's O2 Arena, with the news later being confirmed by festival organisers, reported BBC.

"Who's going to Glastonbury this year? See you there. I'll be there. I'll be headlining on the Saturday night this year," Adele told the sold-out crowd.

Rumours had been swirling for weeks that Adele could be the final headliner, but the singer had previously said she was too scared of the big festival crowds.

Adele also revealed that she almost played the festival last year, but had to back out when she realised her record wouldn't be completed in time.

"I wanted to do it last year but my record wasn't ready. And to the people who say I am too boring to headline, you're more boring for moaning about me headlining."

The festival later confirmed Adele's announcement on their official twitter account writing: "As Adele just announced live on stage in London, she will headline Saturday night at this year's Glastonbury Festival!" 

As @Adele just announced live on stage in London, she will headline Saturday night at this year's Glastonbury Festival!

— Glastonbury Festival (@GlastoFest) March 18, 2016