There's a reason Kim Kardashian tweeted an emoji of a storm cloud on Tuesday. It's an homage to her new niece, explains US Weekly. Turns out, the name of the newest member of the famous clan is, ta da, Stormi. New mom Kylie Jenner revealed the name Tuesday on Instagram with a post of Stormi holding her mom's thumb. The name Stormi may be unusual, but Kim and Kanye West may have topped it in January with the name of their own new daughter: Chicago. (More Kylie Jenner stories.)