Cidny Bullens (formerly Cindy Bullens; born March 21, 1950) is an American singer-songwriter, who is best known for serving as backup vocalist on tours and albums with Elton John and Rod Stewart, as well as providing vocals on the soundtrack of the 1978 feature film Grease. In 2012, Bullens publicly came out as a transgender man and changed his name to Cidny Bullens.