The pop singer said Friday she cannot wait to perform. She says: "I'm pumped just thinking about that huge audience and soaking up their energy."
U.S. & World
News from around the country and around the globe
She joined about 140,000 music fans at the festival in southwest England's Somerset in 2008 to see Jay-Z's show.
The outdoor festival, one of the largest and best-known of its kind, celebrated its 40th anniversary last year. Tickets for this year's event on June 22-26 already have sold out.
Copyright 2011 by Associated Press. All rights reserved.This material may not be published, broadcast, rewritten or redistributed.
Related Content from AccessHollywood.com:
VIEW THE PHOTOS: 2009 Golden Globes Fashion Trend: Strapless Gowns
VIEW THE PHOTOS: 'Dreamgirls'