What a nice gesture! Prince William is all about showing his wife, Duchess Kate (née Middleton), how much he loves her — especially when she turns 38 years old on January 9. To mark her day special, the duke is planning a mini birthday getaway with her and their three children — Prince George, Princess Charlotte and Prince Louis.

“Now William wants to whisk their family away from it all on a no-expenses-spared trip to Mustique as a surprise for Kate. A big surprise!” a source exclusively told Life & Style magazine, on newsstands now. The insider also added that it’s been “a tough year” for the couple, so a vacation would be the perfect way to start out 2020.

Of course, they will be getting the royal treatment. “They’ll stay in a $15 million, seven-bedroom mansion with an infinity pool, private chef, screening room, gym and tennis court,” the insider said. “William wants to ensure they get quality alone time as a couple, so he’s organizing spa treatments, a diving trip and surfing lessons for two.”

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This trip will be equally fun for the kids too. “George and Charlotte love Mustique — building sandcastles, swimming in the ocean, snorkeling and going on nature tours are just a few of their favorite activities,” the source divulged. “And now that Louis is a bit older, he can get involved, too.”

William and Kate aren’t the only royals with some relaxing time to look forward to. Currently, Prince Harry and Duchess Meghan (née Markle) are spending the holidays in Canada with their newborn, Archie.

“Meghan’s so excited and relaxed back in Toronto,” another insider exclusively told Life & Style. “They may go to Banff [to go] skiing over New Year’s. It depends. They’re going to play it by ear. But right now they’re going out to dinners, they’re having fun. They’re not hiding but nobody really notices when they’re in Toronto.” In case you forgot, Toronto is where the former actress resided when she starred in Suits before becoming a royal.

Hopefully both couples have a blast!

For more on this story, pick up the latest issue of Life & Style, on newsstands now!