Gilly Golightly is a Silk Cat baby from the Golightly family, anthropomorphic cat residents of the Sylvanian Families universe. She possesses a distinct fascination for shiny objects, collecting treasures like beads gifted by her mother and stones found at the beach. Gilly particularly enjoys observing sparkling natural elements, especially on sunny days when sunlight reflects off water surfaces.

In the story "A Shop For Everyone," she interacts with other nursery-aged characters, expressing enthusiasm for a new supermarket by anticipating it would contain "lots of dolls and picture books." This dialogue reflects her childlike excitement about toys. During the narrative, Gilly participates in group imaginative games where children pretend to operate their own supermarket, engaging actively alongside peers such as Crème Chocolate and Ambrose Walnut.