Isabelle Morizet (formerly Karen Cheryl on 19 July 1955) is a French singer, actress, radio and television presenter. Karen Cheryl began her career as a singer in the 1970s and 1980s.

Her first single "Garde-moi avec toi" was released in 1975 and her last one "L'Amour Fou" was released in 1991. Her first recordings were released under the name of Carene Cheryl. In 1977, she stated in the television program Le monde de l'accordéon that Carene and Cheryl were her second and third names.