Susan Farrell Egan was born in Seal Beach, California (USA) on 18 February 1970. She attended Los Alamitos High School and the co-located Orange County High School of the Arts and UCLA.
Having long desired to become a performer, Egan spent most of her time taking dancing, concentrating on ballet, and singing lessons as a child, and trained as a competitive figure skater from ages five to ten. While attending Los Alamitos High School, the Orange County High School of the Arts, and the UCLA, she started her career touring with the performance group the Young Americans. While attending UCLA, Egan took time off when Tommy Tune cast her as Kim in his touring production of 'Bye Bye Birdie'. After the tour ended, she was cast in the tour of State Fair and won the coveted role of Belle in the original Broadway cast of 'Beauty and the Beast', for which she was nominated for the Tony Award and the Drama Desk Award, Outstanding Actress in a Musical.
On Broadway, Egan portrayed Belle for one year and reprised the role in the Los Angeles production in 1995, along with many of the original Broadway cast members. At the Sacramento Music Circus, she portrayed Maria in 'The Sound of Music' in 1996 and Molly Brown in 'The Unsinkable Molly Brown' in 2002. Egan joined 'Thoroughly Modern Millie' in February 2004 as Millie. From 2002 to 2003, she was the interim artistic director of the Orange County High School of the Arts.
In 2002, she released her debut CD 'So Far...', featuring versions of wellknown musical songs. This was followed in 2004 by 'Coffee House', which featured a cover version of Wuthering Heights, as well as other popular songs. 2006's 'Winter Tracks' was a Christmas album. After a compilation album and a live album, she released 'Softly' in 2015. It was another collection of Broadway songs.