Serena Williams bikini photo

Serena Jameka Williams born September 26, 1981 is an American professional tennis player. As of 28 March 2009, she is ranked World No. 1 by the Women's Tennis Association, and has now held that ranking on four different occasions. She is the current US Open and Australian Open singles champion and has won 20 Grand Slam titles: ten in singles, eight in women's doubles, and two in mixed doubles. She has won two Olympic gold medals in women's doubles.She is the most recent player, male or female, to have held all four Grand Slam singles titles simultaneously. Williams has won more career prize money than any other woman, in any sport.In 2005, Tennis Magazine ranked her as the 17th-best player of the preceding 40 years.She is the younger sister of former World No. 1 professional female tennis player Venus Williams.