Kylie Jenner might have admitted to having lip fillers, but her butt is all real.

In a Q&A on her app, the youngest of the Kardashian-Jenner clan cleared up rumours that she’d gone under the knife, saying that changes in her figure are all down to her gaining some weight.

Kylie JennerKylie Jenner has denied having any plastic surgery

"You know, I used to be 120 [lbs.]," she said. ”I was really skinny. Now I’m pushing like 136. But it’s alright, I like the chunkiness.

"(I haven't had) ass implants... I don’t really think I have the fattest ass, but I know my angles," she explained.

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The 19-year-old also denied having breast implants, saying: "I’ve thought about [getting breast implants], but I’m like, why ruin it?

"I have really good boobs naturally and they’re a cute little size. I’m not against it, but right now, it’s a no from me,” she added.

But Kylie has also been accused of having surgery on her face, specifically jaw and cheek reconstruction, as well as a nose job.

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"I didn’t get a nose job. I’ve always had a cute nose. I’ve really always liked my nose,” she said. “I always used to love my jaw – I never was self-conscious about my jaw.”

She then added: “You think Kris Jenner would really, at 16-years-old, let me cheek and jaw reconstructive surgery? Nah!”