For this perpetually on-camera icon, even a trip to the grocery store can be an event. "I always want to represent myself right," the Keeping Up With the Kardashians star tells Us. "I can't just wake up and run out!" Luckily, dressing to thrill comes naturally to the 31-year-old mogul, whether she's clad in Versace or her own QVC or Sears collections. Her golden rule? Rock your look with confidence. Says Kardashian, "If you’re not feeling it, you're not going to look sexy."