Izabel Goulart dives into a natural pool during her idyllic St. Barts trip

Izabel Goulart flashes washboard abs as she enjoys strenuous hike on St. Barts

Izabel Goulart shows off her model curves in polka dot sundress on board luxury yacht in St. Barts

Jasmine Tookes, Josephine Skriver and Izabel Goulart ring in the new year in St. Barts