Nobody works harder than my sisters and my mom: Kim Kardashian West defends 'self-made billionaire' Kylie JennerJuly 17 (AZINS) Reality TV star Kim Kardashian West has come to sister Kylie Jenner's rescue after she came under fire for her Forbes cover in which she was called "the youngest-ever self-made billionaire" at the age of 21.

Kim, 37, said all her siblings are "self-made" and it is unfair to target Jenner as they have never gone to their parents for anything other than a piece of advice.

"I really didn't get it, because she is 'self-made' - we are all 'self-made'. What, because we came from a family that has had success? To me, that doesn't really make sense... I know so many people like that who haven't turned out to be as successful as Kylie. If anything, I've seen the complete opposite.

"Me, Kylie, not one (of the siblings) has ever depended on our parents for anything besides advice. That's how I lived my life with my dad. He never gave me anything. We might have the opportunity, but I've seen it go the complete opposite way. Nobody works harder than my sisters and my mom," the Keeping Up With The Kardashians star told Refinery29.

Jenner's company, Kylie Cosmetics, is estimated to be worth $900 million, according to Forbes. The estimate puts Jenner on track to being "the youngest self-made billionaire ever, male or female" - surpassing Facebook founder Mark Zuckerberg, who became a billionaire at age 23.

Several social media users called out the publication for claiming Jenner was "self-made".

But the close-knit family was quick to defend her.

"CONGRATS. Wait I'm posting this again just because!!!! BILLION DOLLAR BABY," Kim also tweeted.

Their mother, Kris Jenner, 62, celebrated the feat on Instagram.

"My beauty on the cover of Forbes Magazine!! I am SO proud of you @kyliejenner and everything you have accomplished. You work so tirelessly on your business, and with so much passion and precision. As a mother, it brings me immense joy to watch you continue to make your @kyliecosmetics dreams a reality!! (sic)" she wrote.

The publication had described Jenner as $900 million Cosmetics Queen.

"At 21, she's set to be the youngest self-made billionaire. Welcome to the era of extreme fame leverage," it said.