Kim Kardashian put the "belfie" on the map, but it's her sister Kylie Jenner who's getting the most attention for her butt-tastic photos these days!
In a new racy Instagram snap, the 17-year-old is seen flaunting her booty in a pair of undies with her sweatpants pulled down.
“Staying comfortable in my @meundies Time to jump in bed after this long week,” she wrote.
Naturally, fans called her out and even speculated if she had butt implants since her derriere appears larger than usual.
"Since @kimkardashian is getting old Kylie is transforming into the new Kim kardashian #fakelips #fakeass #fakeeverything," one fan wrote on Instagram. Another quipped, "See she got a fake a** just like the rest of them."
RELATED: See the Booty Transformations of the Kardashian Ladies!
But when it comes to Queen of the Belfies, does Kim still reign supreme — or is Kylie giving her a run for her money? Sound off in comments!