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Debbie Gibson (also known as Deborah Gibson) is an actor and musician who was an uncredited extra in Ghostbusters.
In the Tavern on the Green scene in Chapter 17: "Who Brought the Dog?", the girl with the pink bow in her hair, celebrating her birthday, is Debbie Gibson. She turns her head and looks at Louis Tully as he screams, face-to-face with Vinz Clortho.