PIC: Beyonce Flashes Amazing Booty in Sizzling Concert

Credit: Ian Gavan/Getty Images

Still the most bootylicious!

Beyonce stunned the massive crowd at Sunday night's Glastonbury Music Festival in England. The superstar, 29, opened her set with energetic performances of "Telephone," a medley of Destiny's Child hits and other songs.

And the stunning wife of Jay-Z showed off perhaps her most famous body part in a sequined gold jacket (plus a skimpy black leotard) that left very little to the imagination.

It was a milestone for the Grammy winner, who was the first female singer ever to headline the festival's main stage.

"I always wanted to be a rock star, and tonight we are all rock stars... I still can't believe I'm performing at Glastonbury," she told the crowd.

In an interview last week, she gushed to the BBC about the honor: "Unbelievable. I didn't even know that... (I) never, ever thought I would be able to headline Glastonbury... I'm so honored that I am the chosen woman and I promise, ladies, I'm going to rock!"