Television personalities Kendall Jenner and Kylie Jenner arrive at the premiere of Walt Disney Pictures' "Prom" at the El Capitan on April 21, 2011 in Los Angeles, California. (Getty Images)more pics »Kendall and Kylie are just as excited as everyone else about Kim Kardashian's upcoming wedding. But that doesn't mean that they know all the details! Apparently, Kim has yet to even tell them what color they'll be wearing! Watch them chat about it below: