Lettie Hatter is Sophie's younger sister and daughter of Honey, as seen in the film, Howl's Moving Castle. She is a chocolate sales clerk at a large café called Cesari's. Cheery and outgoing, she takes after her mother. She is popular and adored by café's patrons. She is voiced by Yayoi Kazuki in Japanese version and Jena Malone in English version.

Lettie has strawberry blonde hair and blue eyes. She wears a light blue eye shadow and salmon colored lipstick. She wears a dress with a darker salmon/light pink dress and a light pink apron over it. Her dress has a few matching accessories. She also wears big red, spherical earrings.