Kylie Jenner's siblings tease her over her billionaire status.

Kylie Jenner

Kylie Jenner

The 22-year-old make-up mogul has amassed a huge fortune from her Kylie Cosmetics empire and she revealed that her sisters - Kim Kardashian West, Kourtney Kardashian, Khloe Kardashian and Kendall Jenner - like to joke about her vast wealth.

She told chat show host Ellen DeGeneres: "Um, it's only when we we're in a group chat talking about we should go on a trip. Kylie ... question mark, are you gonna pay for it? But they're all really proud of me, for sure."

Ellen asked: "Do they really expect you to pay for all of the stuff?" and Kylie's mother Kris, 63, quipped: "No, they don't really. Just my stuff."

Kylie also spoke about her daughter Stormi, calling her the "perfect mix" of Kylie and the tot's father Travis Scott.

She said: "She is the perfect mixture of both of us. She's definitely like a little rager, she loves music."

Kris added: "She is like a little Kylie. It's really wild, it's like sometimes she looks at you and I have to remind myself - 'No, that's my granddaughter, not Kylie'."

Meanwhile, Kylie previously admitted she "didn't expect" to be so successful when she launched her beauty business, which Forbes magazine values at at least $900 million, four years ago.

She said: "I didn't expect anything. I did not foresee the future. But [the recognition] feels really good. That's a nice pat on the back."

Most of the brand's marketing is done through social media - where the brunette beauty announces product launches, previews new items and tells fans which shades she's wearing each day - to her 175 million-plus fan base across Instagram, Facebook and Twitter and Kylie believes it's been essential to her success.

She added: "It's the power of social media. I had such a strong reach before I was able to start anything."

Kylie has overtaken Facebook founder Mark Zuckerberg, who previously held the title of youngest self-made billionaire from the age of 23.

The make-up mogul signed an exclusive distribution deal with beauty store chain Ulta to stock her $29 lip kits - a matte liquid lipstick and matching lip liner - into the company's 1,000-plus stores across 50 states in the US, having previously sold only online or occasionally at pop-up shops.

Following her deal with the beauty company, Kylie Cosmetics sold $54.5 million worth of products in just six weeks, according to estimates from Oppenheimer.

Kylie owns her entire company, which she started in 2015, and has just seven full-time and five part-time employees, while manufacturing and packaging is outsourced to Seed Beauty and her mother Kris Jenner helps run the brand's finances and PR.