Prince William and Kate Middleton have also been going to the quiet Caribbean spot for years, according to Vogue.

So, what do we know about the island that’s historically become one of the British royals’ favourite holiday destinations?

The region’s islands were colonised by the British

Beginning in the 18th century, the region’s islands were colonised by the British. Before the islands’ official independence, British aristocrat Colin Tennant (1926-2010) bought Mustique for around US$1.2 million in today’s money.

Tennant (now called Lord Glenconner) bought Mustique from Saint Vincent and the Grenadines in 1958, according to Architectural Digest. He’d planned on building a cotton plantation, but soon realised the venture would not be a lucrative one.

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In 1960, Tennant gave long-time-friend Princess Margaret (1930-2002) a four-hectare plot of land on the island, which is when her frequent trips to Mustique began.

Princess Margaret’s romantic getaway put Mustique on the map

One of Princess Margaret’s romantic getaways to Mustique once caused a tabloid frenzy. The world was scandalised when she brought her then-lover Roddy Llewellyn to the island in 1976. Llewellyn was 17 years her junior, and they started seeing each other while she was still married to Lord Snowdon, also known as Antony Armstrong-Jones.

Marie Claire reported that the intimate photos snapped on the island lead to Lord Snowdon separating from – and then divorcing – Margaret.

With so much attention around her time on the island, Tennant realised it could be turned into a private getaway for the rich and famous.

Princess Margaret built a luxurious five-bedroom villa on the island

Princess Margaret built a luxurious five-bedroom villa on the island called Les Jolies Eaux, meaning beautiful waters.

Les Jolies Eaux has two pools, a dining pavilion and a staff of five, according to its website, including a chef, a butler and a maid.

Visitors can rent the property for US$27,000 to US$64,500 a week, depending on the time of year they’d like to stay and how many bedrooms they’ll be using.

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Queen Elizabeth eventually made her way to Mustique, too

However, the Duchess of Cambridge used to holiday on the island even before she became part of the royal family, according to Vanity Fair.

Tennant sold plots of land on the island to wealthy buyers

Land sold quickly to rock stars and socialites who could build and design their own homes there, establishing the island as a private spot for the rich and famous. Prince William and Kate Middleton are said to have recently stayed at the Antilles villa on the island, according to The Observer.

With new landowners free to design their homes according to their specific tastes, the 100 or so villas on the island each have their own unique style.

David Bowie owned a Balinese-style villa in Mustique called Mandalay

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A stay at the estate ranges from US$90,000 to US$95,000 a week, depending on the time of year.

Dozens of villas are available for rent

Of those villas on Mustique, dozens are available for rent, like the Hibiscus villa, a five-bedroom, Tuscan-style home with panoramic views of nearby beaches.

The luxury villa has a staff of five, including a chef, a butler, two housekeepers and a gardener, as well as a 15-metre pool, two smaller pools, a gazebo with a bar and a Kawasaki mule and Jeep for travelling around the island.

Prices are available upon request.

The Coccoloba is another rentable villa on the island, featuring four bedrooms, a private screening room, two pools and an in-house staff of six.

Visitors can rent out the Coccoloba from US$25,000 to US$44,500 a week, depending on the time of year.

The Opium villa has safari-style decor and Bali-inspired architecture

The seven-bedroom villa sits on a mountain in the middle of the island, according to Architectural Digest, has a roof tower deck, a yoga studio and a staff of seven, including a butler, a chef, two housekeepers, two gardeners and a property manager.

Travellers can rent out the Opium villa for US$32,500 to US$70,000 a week, according to its website.

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The island has adhered to a strict no-paparazzi policy

Since its founding, the island has adhered to a strict no-paparazzi policy, which is part of the reason why celebrities flock there.

Drones are also not allowed on the island, according to the Travel Channel, and guests visiting from other islands for the day are relegated to staying in specific spots.

The 79-year-old’s Japanese-style villa, called Stargroves, features six bedrooms, a games room, a pool gazebo and a separate children’s cottage, according to its website. Jagger also owns another three-bedroom, three-bathroom property, Pelican Beach, next door.

Restaurants are few and far between – but some, like Basil’s bar, are institutions

According to Vogue, Tennant rescued Charles from a bike accident in 1970, and promised him a job on the island after his recovery. With famous faces from the late Princess Margaret to Hugh Grant making their way through the bar doors, like the rest of the island, Basil’s has a strict no-camera policy. Perhaps this is one reason people feel so comfortable there.

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“It’s great that people enjoy Basil’s so much that they dance on the tables,” Charles told Vogue about New Year’s Eve at the bar. “Even I have danced on the tables!”

In 1976, Tennant sold the Mustique Company, which he’d founded to build the island, to Mustique’s homeowners, who became shareholders. The company now runs the island.

Among the popular activities on Mustique are sailing, horseback riding and lounging on its various beaches.