are trying to copy pippa's look. andrea canning has the bottom line. >> reporter: it's right up there with the greatest assets in history. dolly parton's cleavage. marky mark's abs. so move over, j-lo, kim, now pippa middleton has the most talked about derriere in the world. word. this hottie's hiney got as much attention as the royal wedding itself. >> it's not the size it's the perk factor the she has beautiful lift. it looks perky look a little peach. >> reporter: the peach that has become the apple of everyone's eye. pippa's rear is now so the rage people will do anything to get it. special gym workouts. this woman had surgery called the pippa butt lift. how does your derriere feel? >> amazing. i love the results. it looks beautiful. it feels great. i feel sexy. >> reporter: if going under the knife isn't for you, how about the latest craze -- how about underpants.