(written from a Production point of view)
Johnston was born in California and made her first on-screen steps as a background dancer in the early '80s. She appeared in Francis Ford Coppola's Academy Award nominated drama One from the Heart in 1982, starring Teri Garr and in Sylvester Stallone's Golden Globe nominated Staying Alive in 1983 with Kurtwood Smith. In 1985 she got her breakthrough role as Beatrice Anne "Bebe" Benson in the three time Academy Award nominated A Chorus Line, which also featured Roxann Dawson. This was also her first meeting with choreographer Jeffrey Hornaday, for whom she appeared in the next years in several projects and co-choreographed many as well.
After this step to fame she appeared in Warren Beatty's three time Academy Award winner Dick Tracy (1990, with Chuck Hicks, Seymour Cassel, Ed O'Ross, John Schuck, Paul Sorvino, Colm Meaney, Ed McCready, and Michael J. Pollard), A Gnome Named Gnorm (1990), in the strongly criticized drama Showgirls (1995, with Gina Ravarra), The Replacements (2000), and in the six time Academy Award winner Chicago (2002).
In addition she appeared in the television series Tracey Takes On... (1997, episode Vegas, with Alan Altshuld) and American Dreams (2003, episode The Pursuit of Happiness, with Ethan Dampf), and performed the song "Tame my Heart" in the 1991 independent film California Casanova, for which she also served as choreographer. Other films and television series she has contributed her knowledge as choreographer include Tales from the Crypt (2 episodes in 1990, starring Natalia Nogulich in one), Madonna's television special The Girlie Show- Live Down Under (1993), The Odd Couple II (1998), the television series Boomtown (2002-2003, starring Neal McDonough), A Cinderella Story (2004), the television series Mad Men (2007), Bachelor No. 2 and Another Cinderella Story (both 2008).