Helen played Glinda opposite Idina Menzel, and later Kerry Ellis, as Elphaba. Previews began on September 7, 2006 (opening night 9/27/06). She had her final performance with this company on July 14, 2007. She was asked to return to the role in the original Australian production, but did not accept. Her West End role as Glinda was filled by Dianne Pilkington.