Dana Nicole Williams (born June 24, 1980) is an American singer, more commonly known by her stage name, Yahzarah or Purple St. James.

Yahzarah rose to fame when she became a back-up singer for Erykah Badu in 2000. In 2000, Yahzarah signed to Keo Music Records released her first album, Hear Me. In 2002, Yahzarah signed a recording contract with Three Keys Music and released her second album, Blackstar, in September 2003. The album featured the singles "Wishing", "Blackstar", and "One Day". In 2004, Yahzarah left Three Keys Music and join The Foreign Exchange. In 2008, she released her extended play, The Prelude.