Call it the Kardashian Kingdom. All five Kardashian-Jenner sisters, Kourtney , Kim , Khloe , Kendall , and Kylie , gave a tech talk at the Apple Store in NYC's Soho neighborhood on Monday, Sept. 14, where they shared advice about running successful social media accounts and opened up about each of their respective passion projects. "We wanted to change our digital platform and make it more than just a blog that we had before,” Kim, 34, said. "I just felt like there was no other platform that could do it all unless we do it ourselves." The pregnant-again reality star, who did the most talking at the developer chat, shared that she was up the previous night until "3:30 in the morning torturing the Whalerock team to make sure everything was perfect." Each app will focus on the corresponding sister's expertise: Kim's will feature fashion, beauty tutorials, and selfies; Kourtney's will hone in on motherhood; Khloe's app will follow her...