All eyes were on Serena who looked stunning in the sky blue, knee-length sleeveless dress.
The tennis star donned a pair of sleek, golden open-toed heels and accessorised with a large bead bracelet and a pair of dangling earrings.
Venus also wore a fun, summer outfit to the tasting event that featured dishes from 28 renowned chefs to benefit the James Beard Foundation to promote the culinary arts.
The Williams sisters were joined at the benefit by some of their rivals on the circuit.
Belarusian tennis player Victoria Azarenka, 24, who is currently ranked second among women, wore a little black dress to the tasting.
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