Serena hungrier than ever

The Serena Williams 'catwoman' outfit may stay firmly under wraps at the French Open this next fortnight but the world number one and top seed is not remotely concerned -- she feels the need for no superpowers at all.

The skin-tight, black Lycra outfit she sported to win the US Open last year made her "run faster, jump higher, fight harder" she said.

But as she prepares to slide into action at Stade Roland Garros on Monday, Serena is happy just the way she is.

"My fitness is unbelievable right now," she said on Sunday after a brief practice session on the Parisian clay.

"I just don't get tired. I've been really working on my fitness so I am in really good shape right now...I am happy."

The news will come as no comfort to anybody looking to dethrone the American phenomenon, especially as she is now forming something of a love affair with the tricky slow surface.

"It is not difficult for me to play on clay at all...I love the clay," she smiled.

"You know, I just love it -- actually it means I can be lazier. I don't have to work as hard. I can be out of the point and get back into it, I really like that.