Nat Wolff replaces Dane DeHaan as Victor in the American release of the film. DeHaan voices Victor in the original version of the film.
Félicie, voiced by Elle Fanning, competes for the lead role in the ballet The Nutcracker. Fanning previously appeared in The Nutcracker in 3D (2010).
Maddie Ziegler voices Félicie's rival, who has an overbearing mother; Ziegler is a dancer in real life, having appeared on Dance Moms (2011).
When we see Paris, the Eifel Tower is under construction. Later, we find out that the competition is for a role in a performance of the Nutcracker. The Eifel Tower was completed in 1889, and the Nutcracker didn't debut until 1892.