 Of the main characters who are dancers, five are professional ballet  dancers or have had ballet training (Amanda Schull (qv),  Zoe Saldana (qv), Ethan Stiefel (qv), Sascha Radetsky (qv),  Julie Kent (qv)), one is a professional figure skater  (Ilia Kulik (qv)), and two were actors (Susan May Pratt (qv) and  Shakiem Evans (qv)). Body doubles were used for many of the major  dance sequences.