{blackbabes} Serena hint: Say yes to the dress

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ESPN Fantasy Football / Yahoo Fantasy Football

NEW YORK (AP) -- Tip for Serena Willliams fans: It pays to wear her signature dress to her matches.

Williams, the No. 1-ranked and top-seeded woman, has turned heads with her dress selection for the U.S. Open: a pink, leopard-print model accented by a pink headband and white, leopard-skin wristband.

After her straight-set win over Kaia Kanepi on Monday to reach the quarterfinals, she spotted a fan wearing the same outfit and rewarded her with a souvenir tennis ball.

''She had on my outfit. I was like, 'She should definitely get a ball,''' Williams said.

Of course, there are no guarantees multiple fans won't try the same thing.

''I saw a couple people with my outfit on,'' she said. ''But she was the one who got it.''

CBS Sports Fantasy Football / Official NFL.com Fantasy Football