Kim Kardashian made $19 million in three hours from her new makeup line

Kim Kardashian is one savvy businesswoman.

The 36-year-old reality star launched her own makeup line, KKW Beauty, on Wednesday… and within three hours, she'd sold out of all 300,000 beauty kits – bringing in an estimated $19 million AUD ($14.4 million USD).

The collection features $63 Crème Contour and Highlight Kits to recreate the chiselled looks frequently sported by Kim. The kits come in four shades and include contour and highlight pens, as well as a double-ended blending brush.

"All of the Contour & Highlight Kits have sold out!!!" Kim tweeted excitedly.

Her beauty success follows that of younger sister Kylie Jenner, whose mega-popular lip kits routinely sell out. And earlier this year, Kim and Kylie collaborated on a KKW x Kylie Lip Kit collection, which retailed for $59 and sold out in minutes, raking in an estimated $17.9 million.

Kim's beauty line joins her other highly successful business ventures, which include the Kimoji emoji app ($4.49 per download), and her subscription-based personal app, which charges a monthly fee. She's also an executive producer on Keeping Up With the Kardashians.

On Wednesday, it was revealed the Selfish author and husband Kanye West have hired a surrogate to carry their third child. They are already parents to daughter North, 4, and son Saint, 18 months.

"I grew up with siblings," she told TODAY in 2014. "If I could just snap my fingers and have four [children], I would have four."