PRINCE WILLIAM AND KATE JOIN STARS IN SURPRISE VIDEO

Hip, hip, hooray!

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As the Paris Olympics came happily interrupted their summer vacation to praise the British team for a job well done.

"From all of us watching at home, congratulations to Team GB," said a beaming Kate, 42, in the prerecorded message, seemingly filmed at their Anmer Hall estate in Norfolk, where they're holidaying with their children, Prince George, 11, Princess Charlotte, 9, and six-year-old Prince Louis.