Beyonce Knowles stripped down to a bikini and belly chain yesterday while off the coast of Croatia with Jay-Z. They rented a luxurious yacht for the week, and Beyonce spent her afternoon out and about on a jet-ski. They docked at Dubrovnik later last night, looking gorgeous as they walked to their dinner date where things got heated between their bodyguard and the paparazzi. Check out a peek at today's PopSugar Rush featuring video of Jay-Z and Beyonce's luxurious vacation.