Hermione bought a Wonder Woman costume from a magical shop. Upon wearing it, she inherited Wonder Woman's powers and goddess strength, transforming her body into a muscular, powerful form. Realizing the costume's magic, Hermione used her new abilities for her own benefit and to protect her friends. Her kind heart guided her actions, not to be a superhero, but to ensure the safety and well-being of those she cared about. The enchanted outfit symbolized her personal strength and loyalty.