Prima J is an American musical duo, composed of cousins Jessica and Janelle Martinez. Jessica (born on May 25, 1988) and Janelle (born on August 26, 1988) came up with their stage name by combining the letter "J" in each of their given names with the Spanish word "prima" (meaning female cousin). == Career == Their self-titled debut album was released on June 27, 2008. They made their debut in 2007 with the single "Rock Star" for the Bratz Motion... [more on Wikipedia]