So what could her weight gain be from? The 17-year-old has repeatedly denied the endless reports she's pregnant with Tyga's baby, so we can put those rumors to rest. Plus, in a photo she just posted flaunting her super flat stomach in a white crop top and tiny waist, you can clearly see there's no baby bump.
We're thinking her weight change is probably just from being a typical teenager going through puberty and that she looks amazing whatever size she's at. But if she wants a workout buddy, her sister Khloe Kardashian, who just shared her own inspirational fitness journey, would be the perfect person!
Are you surprised at Kylie's weight gain? We can hardly tell a difference in the two photos ourselves.
Want More? Like us on Facebook
Gallery | Kylie Jenner's Top Fashion Moments of 2014