Woman athlete dares to let hair down…

No doubt about it, after winning the US Open, Roger Federer would have returned home to study his game, then hit the courts at 4am the next morning to prepare for next year’s title defense. He’s just that kind of guy. Serena Williams, on the other hand, has thrown caution to the wind and decided to start having the time. Of. Her. Life.

Since being crowned Princess of Tennis over the weekend, she’s popped her head round the door at New York fashion week, slipped into something a little slinky and sprawled herself across a New York police car, and enjoyed a rocking night with rap star Jay-Z. That’s some half-a-week.

Witness the proof after the jump.

Looking steamy on a police car.

With Jay-Z, a famous American one-man-band.

At the very trendy New York Fashion Week, darling.