But she's a kitten," says Chris Evert about Martina Navratilova on ESPN Classic's ... hair, clothes, glasses, nationalities, coaches, lovers -- the one thing, ever the same, ever distinct, is ...

Martina Navratilova won 56 Grand Slam championships ... "Through all her transformations -- of body, hair, clothes, glasses, nationalities, coaches, lovers -- the one thing, ever the same ...