Kim Kardashian is officially a billionaire and she's seemingly celebrating in a tiny skimpy bikini with ocean spray everywhere. The 40-year-old reality star and business mogul, now running her 2019-founded SKIMS line alongside her KKW Beauty brand, was this week confirmed as having joined the billionaire club by Forbes, with the iconic magazine showing the E! star's net worth to be a healthy $1 billion. Kim, who has been in the news this year for announcing her divorce from husband Kanye West, is now all bikini and smiles. See it below.