For the past few weeks, Duchess Kate, Prince William and their young children have been vacationing at the Middleton family’s go-to Caribbean spot, Mustique. Turns out Mick Jagger and his daughter, Jade, have been spending time there, too, this summer, and one evening last week, all four Brits all stopped by the same party. Will and Kate are apparently pals with Basil Charles, who owns the famous island watering hole, Basil’s Bar. When Basil threw a special, “Splash of Gold”-themed bash, the couple stepped out for a rare date night, sans Prince Louis, Princess Charlotte and Prince George. Spies tell HELLO! the royal couple stopped by “on the early side of the party” in “island chic” attire. “They were there for the cocktails segment and kept it rather classy,” said one source. Kate’s parents, Carole and Michael Middleton are rumored to be joining the royal fam at some point during their vacation.
