Khloe Kardashian and Kim Kardashian Dimitrios Kambouris/Getty Images Kim Kardashian is always ready to serve looks. The Skims founder pulled out all the stops in a floor-length gold gown on Sunday, July 28, as she attended nephew Tatum’s 2nd birthday — much to sister Khloé Kardashian’s amusement. “Wowie! The Golden Globe is here, ladies and…