Tennis pro, Serena Williams made her very first red carpet appearance, since announcing her pregnancy, at the Met Gala in New York on Monday evening. Williams was dressed in a gorgeous emerald green gown that highlighted her baby bump and featured a plunging neckline, paired with sparkling diamond earrings that had jade green stones.The Olympic athlete was accompanied by her fiance, Reddit co-founder Alexis Ohanian, to the fashion gathering. See more photos after the cut.