"So as you know, I was getting ready to go to Paris for the Balmain show at Paris Fashion Week for the launch of my makeup collab with Olivier [Rousteing]," her tweet, which was a screenshot of a Notes App statement , reads. "Unfortunately, I’m really sick and unable to travel. I’m heartbroken to be missing this show, but I know that my amazing team, and my friends who are in town for the event, will help me be there in spirit."