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Serena Williams, (born September 26, 1981) is an American female tennis player, currently ranked World No. 1, who has won fifteen Grand Slam singles titles. . She is the last player, male or female, to have held all four Grand Slams at the same time. She is considered one of the best players of all time. She is the younger sister of another former world No. 1 professional female tennis player, Venus Williams.
- We say booty. I'm not quite sure about 'posterior'. I'll try to keep that in the back of my mind. 'What are you doing?' 'I'm shaking my posterior.'
- Serena Williams. She was asked what she thought about a TV commentator admiring slow-motion pictures of sister Venus' "posterior" 
- Every day, you know, you learn something new about someone. I think that's what life is about, it's about learning something new every day. A partner for me that will be lifetime. She's just a great individual and incredibly powerful woman.