John Stamos is on cloud nine. The 54-year-old Fuller House star celebrated his first week as a married man after tying the knot with his wife, 31-year-old actress Caitlin McHugh, in "a very touching ceremony," sources told People. "#oneweek (and they said it wouldn't last)," he joked on Instagram along with a photo of the couple on their honeymoon at Disney World. John also called himself the "happiest man on earth," which is fitting since the Orlando, FL, resort is known as the happiest place on Earth. Pictures from John and Caitlin's wedding day prove the couple have found their happily ever after, and they couldn't look happier together. Congrats again to the newlyweds!