Reality TV star Kylie Jenner has set the record straight on rumours saying that she used implants to boost up her breasts.

In a video titled "Kylie Comes Clean: They're Real", available only to subscribers of her website, the 18-year-old said she only used padded brassiere to make her breasts look prominent, reports aceshowbiz.com.

In the video, Kylie wore a white tank top as she revealed the secret of her ample cleavage.

"I don't share this with a lot of people, but everyone thinks I've gotten breast augmentation recently, but I haven't," Kylie said in the video.

"I just use the Bombshell by Victoria's Secret. It's life-changing. I've gotten all my sisters on it and all my friends," she added.

"Clearly, it's like 10 times bigger - no contouring, no nothing," the reality TV star said as she demonstrated the result of wearing the brassiere.

"This is all padding. I think it makes your breasts look great and girlie. This is it. No breast implants. No surgery. Nothing. It's amazing. So if you guys want this look, here's my secret."