Kim Kardashian’s brand was just launched into another stratosphere of riches — hitting the billion-dollar mark … courtesy of a new deal with a very familiar beauty investor.

Here’s the scoop … Kim’s beauty business — with a range of products from makeup to fragrances — just received a massive influx of cash from cosmetic conglomerate Coty Inc., which forked out $200 million for a 20% stake in KKW’s biz.

Do the math and it all adds up — Coty valued Kim’s co. at $1 BILLION.

We’re told the deal is for a longterm strategic partnership to launch products in new beauty categories and expand across the globe from top to bottom. Read more by clicking here: TMZ