The British socialite (and her butt) has become a household name after serving as sister Kate Middleton's chief bridesmaid at her April wedding to Prince William.
According to ABC News, the latest craze in the US is the 'Pippa butt lift', with women wanting to replicate the 28-year-old's rear end.
"She's got a nice rump that's not too big," 28-year-old Christina Valdez, who's gone for a 'Pippa butt lift', told Good Morning America. "Her frame just looked incredible in that dress.
"I was like, 'That's it. This is it, I just have to look like her'. If she can look petite and great and still have a nice backside to her, so can I."
Miami-based plastic surgeon Dr Constantino Mendieta said that Pippa had "created a stir" in her Alexander McQueen dress, adding: "People want those dimensions. She's just gorgeous."
He said that 80% of his work is now butt lifts, with 20% - including Valdez - requesting the 'Pippa butt lift'.
Valdez claimed that the two-hour surgery - which saw fat from her stomach injected into her backside - had made her "feel sexy", saying: "I love the results. It looks beautiful [and] feels great."