passing through a busy public area:

slipping through throngs of people, attention is distracted by a fairy like entity. As it approaches it brings out a hand mirror from behind its back, and as it reaches personal distance the shiny lenses face both the encountered and the apparition. Her silver window shows him himself, in shapes and way that he hadn't imagined possible.

does the encountress reach into the pocket of her enchanted being?

...or does she smile at the sight of herself in the mirror, as it changes too.