Prince Harry, 28, and his much talked-about girlfriend, Cressida Bonas rocked out to the music at the Glastonbury Festival in the UK on Saturday. 

The two, who have been an item for a year now, love to party together and made quite a night out of the event. According to E! Online, they took advice from a festival organizer about how to enjoy the night into the wee hours of the morning.

"Prince Harry was great actually," said the organizer, Michael Eavis to UK's Telegraph. "I recommended that he should go on into the night, because the nightlife is what Glastonbury is all about. I told him to get his taxi driver to come back at five o'clock in the morning and do you know what? He lasted until four in the morning."

The twosome have painted the town red in London, at the "Dark Knight Rises" premiere last summer and many other places since Princess Eugenie, a friend of Bonas, introduced the pair.

"Cressida is really smart, very naturally pretty and just a really cool girl to hang out," a source told E! last July. "It's hard for Harry to date as there are so many opportunities out there, but Cressida is someone he knows he can trust as she is already in his circle. She's already pasted the test of being discreet."

Earlier, the couple had a little P.D.A session during a ski holiday in Verbier, Switzerland and then Saturday, the red-headed royal hung out backstage with his lady love, watching headliners, such as the Rolling Stones perform onstage.

Eavis said that the Prince was very relaxed, at ease and blended into the crowd. "His friends were all having a great time," he added. "He didn't want to make a formal thing of being there."

Reportedly, the royal ditched Bonas to party with Kate Moss, according to Entertainment Wise.  He was joined by the supermodel, who just did a new campaign for Stuart Weitzman, on the dance floor until the early hours.

"Harry was up for it," a source told UK's The Sun. "He was dancing in a grey trillby and a white T-shirt, with two security guards close by. They just let him get on with it. Kate Moss was dancing right next to him."

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