Exactly one month ago, Kourtney Kardashian effusively tweeted, "Amazing top secret meeting today at with OPI!!! I am obsessed with their nail polish colors!" If it sounded like the Kardashian sisters might be creating a nail polish collection, that's because they are. Today, Kim confirmed rumors of the trio's collaboration with Nicole by OPI, saying the shades would capture the "glitz and glam" of their world. Today, Khloe, Kim, and Kourtney are shooting a campaign for the collection, whose launch date has yet to be announced. If it's anything like the Justin Bieber nail polish from Nicole by OPI, it's sure to sell out almost as soon as it hits shelves.