Serena Williams Shows Off Her Athletic Physique In Plunging Yellow Frock

Despite some knee pain earlier this month, Serena Williams proves that she's back on top of her game. The 33-year-old led a group of international tennis stars as they gathered for the BNP Paribas WTA Finals at Singapore Sports Hub Saturday in Singapore. The tennis champion stood out in a cleavage baring canary frock that highlighted her muscular legs and arms.