All the pics I've seen of Wallis, she's always been rather hard and masculine looking, even when younger. And anorexic looking. Very slim no hipped boyish body.
Pippa has a little bit of a hard edge that can look a bit strong at certain angles but past that I don't see a resemblence to Wallis myself.
LaRae
Pippa is athletic and this is reflected in her body type. I don't think she looks hard at all. And. no, not anything at all like Wallis.