Nicky Hilton wore a purple bikini yesterday for an early morning swim in the Mediterranean. She's been vacationing with her sister, Paris, on a yacht off the coast of Monaco, and the girls ventured into Monte Carlo later in the day to shop and eat. They made a stop by Cartier, where Paris picked up a few items from their Panther collection while Nicky did research for her upcoming costume jewelry line. Nicky's not the only Hilton launching new products, though, since Paris just debuted her latest fragrance, Tease, with a larger-than-life billboard in NYC.
To see more photos of Paris and Nikki shopping, boating, and swimming, just