Last Christmas Wham!
Organiser confirms booking "Single Ladies" singer for festival
Glastonbury festival organiser Emily Eavis decided to book Beyoncé after seeing her performing live last year.
Eavis has described the 29-year-old as "incredible" and said she wants to make the traditionally rock festival more "diverse".
Rapper and Beyoncé's husband Jay-Z headlined Glastonbury 3 years ago.