The pop superstar won over critics and wowed attendees at the traditionally rock-orientated event when she headlined the main stage at last weekend's (27Jun11) gig, and her festival success has helped to boost sales of her music, old and new.
Her fourth solo project, 4, replaced Lady Gaga's Born This Way as Britain's best-selling album of the week, forcing the Paparazzi hitmaker to drop to number three behind Adele's 21.
Beyonce's previous discs, I Am Sasha Fierce and Dangerously In Love, also reappeared in the Top 50, as did her former band Destiny's Child's greatest hits album, #1's.
And she's also flying high in the U.K. singles chart - Best Thing I Never Had is a new entry at three, while R&B singer Jason Derulo (Don't Wanna Go Home) and rapper Example (Changed the Way You Kiss Me) remain in first and second place, respectively.
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