Susan McFadden [ age 34 ] is a graduate of the Billie Barry Stage School, located in Dublin. Before appearing on Grease is the Word, McFadden toured with many Irish entertainers (including June Rodgers) in supporting roles. She was one of the dancers in Daniel O'Donnell's Rock & Roll Show tour and DVD. She also played the role of Kathy in an Irish production of Singing in the Rain in 2004 to much acclaim. The show played at the Olympia Theatre in Dublin and the Everyman Palace Theatre in Cork. She is the winning contestant on the ITV reality TV show Grease Is the Word. As a result she played the lead female role of Sandy in the West End production of Grease with Danny Bayne beginning in August 2007.
On 5 January 2012, McFadden was named as a replacement for Lisa Kelly, then going on maternity leave, in the all female ensemble Celtic Woman. McFadden debuted with Celtic Woman in February at Nashville, Tennessee for the kickoff of the "Believe" North American Tour and continued with the European, Australian and South African Tours in 2012.