Tennis ace, Serena Williams, was the main attraction after slipping into a tiny coral two-piece and showcased her toned curves while laying out on a white boat, before enjoying a dip in the sea for a snorkelling session as she holidayed off the coast of Croatia over the weekend. Boasting a tiny waist, the star’s athletic physique was perfectly showcased in the neon number, which tied in a halter around her neck. Hawt or nawt? Another picture after the break …