From Christian Post:
Annette Charles, best known for her role as Cha Cha DiGregorio in “Grease,” has died at the age of 63. Her death comes just two months after “Grease” star Jeff Conaway died of an overdose at the age of 60.
Charles’s character Cha Cha was girlfriend of the T-Birds rival gang The Scorpions. Conaway’s character Kenickie was second in command to leader of the T-Birds Danny Zuko, played by John Travolta.
In a move to spark jealousy, Conaway’s character Kenicki takes Charles’s character Cha Cha to Rydell High’s school dance. Charles most memorable scene, however, was her sultry dance with co-star Travolta.
In addition to her role in “Grease,” Charles appeared on various television shows throughout the 1970’s and 80’s, including “The Mod Squad”, “Bonanza”, “Magnum P.I.”, “Baranby Jones”, “The Incredible Hulk”, and "The Bionic Woman.”