The pregnant Keeping Up With The Kardashians star showcased her bump in spandex black mini shorts worn with a skintight top, fitted blazer, fishnet leggings and ankle boots.
Following the event, Khloé took to Snapchat to congratulate her big sister on her launch.
“It’s so motivating and inspiring, everything my sister has done, how strong she is and how much she has accomplished and overcome the past year,” the 33-year-old said.
“Kim, I’m so proud of you. I’m so happy for you. You are happier and better than you’ve ever been and I think it shows. I’m excited for your launch tomorrow. I love you.”
In an interview on The Ellen DeGeneres Show, Kim addressed both Khloé and Kylie Jenner's pregnancies.
"So, for the safety of my life … we just decided there is so much that goes on that we respect each other’s right to speak for themselves. So I will speak about myself, and hopefully they can come on [the show] and address whatever rumours you might have.”