Gold toothbrushes, $285,000-a-night suite and Beyonce's $35million one-hour show: Inside the world's 'most luxurious hotel' as it opens its doors for the first time

For guests paying $285,000 a night for a suite, surely only the biggest star on the planet is adequate entertainment.

And Beyonce was indeed the headline act at last night's launch party of what's being billed as the world's most luxurious hotel.

The Crazy In Love singer was paid a reported $35million for her one-hour show – her first concert performance in four years – at the Atlantis The Royal in Dubai.

The hotel's guests enjoy complimentary gold-plated toothbrushes, combs and razors – which bosses expect guests to sneak into their suitcases – a 'menu' of seven pillows, personal butlers, and the chance to meditate with dolphins.

Its shop sells Picasso art, and there are 17 restaurants and bars involving eight celebrity chefs, including Heston Blumenthal's debut bar, Resonance, where guests can admire a 21ft high aquarium containing 4,000 jellyfish.

It is the first hotel to be designed with Instagram in mind, with a series of features designed to look good in photos including a fountain that spans four acres – and breathes fire. The cheapest room is $1,800 a night.

Celebrities at the launch included Kendall Jenner, Rebel Wilson, Liam Payne, Mark Wright and Michelle Keegan as well as Beyonce's husband Jay-Z and their children.

Party-goers glugged 4,000 bottles of Moet & Chandon champagne at the opening of the 43-storey hotel, which has 3,000 members of staff to cater for its wealthy guests.

The VIP-only 'grand reveal party' comes ahead of the full opening next month to those members of the 'general public' who can afford it.

The flagship Royal Mansion suite where Beyonce and her family stayed costs $142,500 a night. Set over 11,000sq ft and 22 floors up, it has four vast rooms, a cinema, a 'safe room' and its own pool. Should you need further space, it can expand to 15 rooms for $285,000 a night,

Of the 795 rooms, 44 have their own private infinity pools, hundreds of feet in the air.

Off one bar is an exclusive 'ultra lounge' with 20 tables, each having a minimum spend said to be upwards of $35,000.

Hotel boss Timothy Kelly told The Mail on Sunday: 'We call that the space for your one percenters' – an exclusive spot only for the very richest 'celebrities and dignitaries'.