Celebrities really know how to Summer, but some stars truly excel at the art of sun and fun — we're talking yachts, bikini selfies, partying with models, shirtless  horseback riding . . . all the basics, right?! This Summer has some real standouts including jet-setting Leonardo DiCaprio  and his man-pony, crazy-hot couple Sofia Vergara and Joe Manganiello, and more — find out who else made the cut!