Any Oscars after-party will have plenty of diamond necklaces and vintage gems to go around. But tennis phenomenon-turned-mogul Serena Williams served a curveball luxury accessory with her Dolce & Gabbana dress at the March 2 bash: luxurious perfect replica Audemars Piguet watches. In her first appearance since surprising the Super Bowl halftime show last month, Williams walked the annual Vanity Fair Oscars After-Party red carpet in bombshell fashion. She sampled the evening’s big corset dress trend—also worn by Kylie Jenner and Jenna Ortega—with a strapless Dolce gown featuring a semi-sheer sequin bodice, a mile-high slit revealing one thigh, and a voluminous skirt. Stylist Lyndrea Price stacked Williams’s look with the…