When Serbian tennis player Novak Djokovic defeated Rafael Nadal at the 2012 Australian Open, the star was greeted by cheers from a beautiful, familiar face, his girlfriend Jelena Ristic.

Ristic and Djokovic have been dating for more than five years and met through mutual friends in Serbia. Like many tennis girlfriends and wives, Ristic follows Djokovic on tour and attends all of his games. 

I'm really proud. It's his dream to be so successful and I'm really happy for him that he managed to, you know, accomplish at least part of his dream, Ristic said. Hopefully I'll be there to help him and to see him achieving the biggest one, the top. 

Like Djokovic, many athletes have beautiful wives and girlfriends behind the scenes cheering them on. From New England Patriots quarterback Tom Brady's model wife Gisele Bundchen to Jay Cutler's belle Kristin Cavallari, athletes often have sexy, smart and successful girlfriends and wives. 

Take a look at some of the hottest athletes' wives including Jelena Ristic, Kim Sears, Gisele Bundchen, Gabrielle Union, Kristin Cavallari, Brooklyn Decker, Irina Shayk and Carmella DeCesare. 

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