Beyonce Knowles - Beyonce Follows Glastonbury With Secret London Show

The pop superstar rocked the final day of the iconic event with an hour-long set, making her mark as the first female performer to headline the festival.

She hailed the experience as the best of her career to date, and treated a select few to another show in London on Monday night (27Jun11).

Beyonce held a party at the city's Shepherds Bush Empire to promote her new album, 4, which included a behind-the-scenes look at the making of the record and a performance for guests including pal Gwyneth Paltrow, Glee stars Kevin MCHale and Chris Colfer, and British singer Adele.

Taking to the internet during the event, Paltrow, who has previously cameoed on Glee, posted a picture of her with former castmate MCHale on her WhoSay.com page, alongside the words, "Look who I ran into just now at B's secret show!"