The Kardashian Sisters - Kim, Khloe and Kourtney - sit down with WSJ's Lee Hawkins for an exclusive interview about the business of celebrity. The sisters discuss how they developed their fashion line, how "Keeping Up With the Kardashians" helps them build an audience and brand awareness, and the ways they use Twitter and other social media to connect with their fans. Usher discusses his new album HERE: http://bit.ly/M8uJlU Mario Lopez talks Ryan Seacrest HERE: http://bit.ly/KYZknO Watch Manny Pacquiao's exclusive WSJ interview HERE: http://bit.ly/KZyiNj Lee Hawkins interviews Soulja Boy, John Elway, Cee Lo Green and more HERE: http://bit.ly/LWstNg Subscribe to WSJ Live HERE: http://bit.ly/Kpz7Ab