She made the announcement at a show in London on Friday night.
Adele is headlining the Saturday night, on 25 June, at the Glastonbury Festival this year.
She made the announcement at her show in London’s o2 Arena.
“I wanted to do it last year but my record wasn’t ready,” she revealed.
“And to the people who say I am too boring to headline, you’re more fucking boring for moaning about me headlining.”
As @Adele just announced live on stage in London, she will headline Saturday night at this year's Glastonbury Festival!
— Glastonbury Festival (@glastonbury) March 18, 2016
She will join fellow headliners Muse and Coldplay, who headline on the Friday and Sunday respectively.
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