Olivia Palermo slipped into a bright bikini for a game of paddleball with Johannes Huebl in St. Barts today. The duo also hit the beach earlier this week, when they splashed around in the water and lounged in the sand. Olivia wore a blue bikini Tuesday and Johannes went shirtless for that outing, which also included PDA between the couple. They aren't the only lucky stars to be relaxing in the Caribbean since Rachel Zoe and Rodger Berman are also vacationing there with their son, Skyler. Rachel, Rodger, Olivia, and Johannes are among the many shirtless and bikini-clad celebrities to be spotted in sunny locales this holiday season.