Kate, 37, and William, 37, took their three children Prince George, six, Princess Charlotte, four, and one-year-old Prince Louis, to one of their favourite holiday destination, which has a no-fly zone and its own security force.
The four-bedroom accommodation boasts panoramic views of Bequia and St Vincent from its infinity pool and is staffed with a butler, a chef, a housekeeper and a gardener.
There’s a choice of indoor and outdoor dining locations within the villa and guests can choose from an extensive menu, which includes prawn ceviche, grilled lobster and Antilles flaming banana dessert.
The children’s room features two single bunk beds, with an elephant laundry basket and whale decorations on the walls.
Prince George, who celebrated his sixth birthday on holiday, is said to have loved the bunk beds the most.
Mustique has long been a favourite haunt for the Royal Family and A-listers, with Princess Margaret and Mick Jagger being regulars back in the day.
Kate and William have taken several trips to the resort and its become a favourite with the Middletons.
The family were last spotted together in public at the King Power Royal Charity Polo Day last month, where the Cambridge kids met cousin Archie for the first time.
Princess Charlotte is set to start at the same school as her brother, Thomas’s Battersea, in September.
The duke and duchess will go head to head in the King’s Cup sailing regatta on August 9, in Cowes on the Isle of Wight.