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Kylie Jenner is once again denying rumors that she's gotten breast implants.

But this time, the 18-year-old reality star is sharing her big secret to getting that ample cleavage look.

On her brand-new lifestyle website and app she launched today -- which costs $2.99 a month to subscribe to -- Kylie touts the wonders of Victoria's Secret Bombshell bra.

WATCH: Kylie Jenner Bares Cleavage for Terry Richardson in Sexy New Photo Shoot

"I'm gonna share with you guys one of my tricks," Kylie says in a video. "I don't really share this with a lot of people, but everyone thinks I've gotten a breast augmentation recently. I haven't. I just use the Bombshell by Victoria's Secret."

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    "It's life-changing," she stresses. "I've gotten all my sisters on it, all my friends, and if you ever want the look of bigger breasts, that's what I do."

    Kylie then shares what she looks like in a "normal lace bra" under a plain white tank-top.

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