Princess Beatrice partied until after midnight at a secret VIP Glastonbury hideout.

Her appearance came hours after rock band IDLES led thousands of revellers in a chant of ‘F*ck the King’ as they headlined the Other Stage on Friday.

Unaware of the royal backlash, Beatrice was seen with a group of pals who let their hair down at the Soho House outpost after Dua Lipa took to the Pyramid Stage.

The exclusive pop up bar, which is only accessible for hospitality guests, is hidden behind a hedge and manned by two layers of security.

And we spotted Beatrice – who was dressed down in a black jacket, black trousers and white trainers – knocking back cocktails until the early hours of Saturday morning.

The mum of two – daughter Sienna and stepson Wolfie – drew barely a glance from partygoers as she sipped £13.50 Picantes

and swayed along to Kylie Minogue’s Can’t Get You Out of My Head. And a source told us: “Beatrice loves Glastonbury and always has a great time but she prefers to stay low key and blend in with the crowd.

“She’d rather have a good time with her pals than draw attention from anyone else.” It was long after midnight when Beatrice and her pals finally called it a night.

Other celebs who proved their staying power long after Dua’s epic headline set were Cara Delevingne and Anya Taylor-Joy. The pals – with Cara in a jacket bearing the word VIAGRA – had to ask directions from festival wardens as they hunted down the VIP area at 1.30am.

And Cara seemed thrilled when a gang of festival goers spotted them and told her they loved her recent stint as Sally Bowles in Cabaret.

Emma Corrin and Rami Malek seemed closer than ever as we saw them cuddling up to each other at a property lock up at 2am. The Crown star – who became a household name playing Princess Diana in the hit Netflix series – cuddled into the Bohemian Rhapsody actor’s chest as they queued for their belongings.

Both also chatted to fans queueing alongside them, who complimented their acting work before heading off hand in hand. It was reported earlier this month that the pair have moved in together, with rumours that an engagement is on the cards.

While Beatrice was having a blast with her celebrity pals, hours earlier rock band IDLES took to the Other Stage where they led the crowd in chants of ‘F*ck the King.’ In scenes that caused headaches for BBC bosses as the set was broadcast with minutes delay on Friday night, the five piece band peppered their set with a series of political statements.

During a pro-immigration song, a boat appearing to carry migrant children was surfed through the crowd while singer Joe Balbot branded Nigel Farage a ‘fascist.’

Over on the Pyramid Stage, Dua Lipa dazzled the crowd with her first headline performance that saw fireworks, slick dance routines and surprise guests.

The pop star described the experience as “the maddest night of my life” as she treated revellers to a selection of her popular tracks, including These Walls, Break My Heart, Hallucinate, Electricity, Physical and Don’t Start Now.

The 28-year-old opened and closed her Pyramid stage performance with tracks from her third studio album Radical Optimism, kicking off with Training Season and finishing with Houdini, as fireworks shot through the air.

“This has been a massive dream come true,” she said, before adding “Glastonbury, I love you”.