Kate Middleton’s parents Carole and Michael enjoy holiday on Mustique island

According to sources cited by HELLO!, Michael Middleton and Carole Middleton arrived in Mustique, but the report notes that their daughter and son-in-law haven’t joined them yet.

Carole Middleton’s birthday will be celebrated on the Caribbean island, as she turns 61 on January 31.

Last year, Kate and William were accompanied by the Middleton family on the beautiful island around the same time.

The Caribbean island is the Duke and Duchess of Cambridge’s favorite vacation destination.

Jeweler Martin Katz, who met the royals on the island of Mustique back in 2008, revealed that they were very down-to-earth.

“I was standing at the [hotel] bar ordering one of the fancy drinks and Kate actually came up to the bar and was quite pleasant and chatty,” he told People magazine. “She couldn’t be more friendly and more open.”

Katz also enjoyed chatting with Prince William.

“We started talking about scuba diving. They had gone that day or the day before, and while I was talking, I was holding a glass of fruit punch and it slipped from my hand and crashed to the floor and sprayed all over the prince’s feet. He was in flip-flops,” Katz said. “I was mortified of course, but all I heard was, ‘That was quite refreshing, thank you.’ His mother would have been quite proud that he handled himself with such dignity.”

Last year Catherine, Duchess of Cambridge, obtained the Professional Association of Diving Instructors (PADI) Advanced Open Water Diver qualification.

So now during her vacation on the mesmerizing island she can dive up to a depth of 98ft.