Although Lima wanted the animation to be nostalgic, he wanted Enchanted to have a style of its own. Baxter's team decided to use Art Nouveau as a starting point. For Giselle, the 2D-animated character had to be "a cross between Amy [Adams] and a classic Disney princess. And not a caricature." Seeing Giselle as "a forest girl, an innocent nymph with flowers in her hair" and "a bit of a hippie", the animators wanted her to be "flowing, with her hair and clothes. Delicate.

To maintain continuity between the two media, Lima brought in costume designer Mona May during the early stages of the film's production so that the costumes would be aligned in both the animated and live-action worlds. He also shot some live-action footage of Amy Adams as Giselle for the animators to use as reference, which also allowed the physical movement of the character to match in both worlds. Test scenes completed by the animators were shown to the actors, allowing them to see how their animated self would move.