Jessica Higgins Isabella Cowell Casey Cowell Jessie, Izzy, and Casey are best friends but also not your typical teenage girls. Jessie is Paul Higgins daughter, Izzy and Casey are Simon Cowell's daughters. The three of them basically live their life's in the limelight. They have paps that try to snap a pic of their every moves and magazines that want them on the cover ever month. Sounds luxurious. Not. Their fame is all because of who their fathers are and maybe who they might date when you add One Direction to the mix.