Like I said above, Pippa only has slight mum-tum, no signs of significant weight loss.
My ex-wife went from size 14/16 to size 8 over a 2-year period in her late 20's after 2 kids, she had (and still has to this day) saggy stomach, stretch marks on inner thighs & ass and loose skin on her arms (bingo wings) & neck.
The girl I met last week, who is the same girl from the photos on English Pippa's AW & UKE profiles, has none of these.