KIM KARDASHIAN AND POST MALONE?!?!?! The A-listers would be one of the most unexpected celebrity odd couples we've ever heard of... But that's the hot rumor! People are claiming they're secretly dating! On Wednesday, sources told RadarOnline the reality star and the singer started "quietly spending time together" after Posty, whose real name is Austin Richard Post, was featured in a SKIMS campaign. One insider playfully called the romance "showbiz's worst-kept secret.