Kelly, the daughter of Ozzy and Sharon Osbourne collapsed while filming her E! show Fashion Police, and was taken to a Los Angeles based hospital where she was expected to stay overnight.
Kelly was recording the latest episode of the style programme alongside Joan and Melissa Rivers, who has been covering for usual panellist Giuliana Rancic.
Kelly reportedly turned to the star and told her she didn't feel well, before she fell out of her chair shaking.
