Georgie Henley's reaction to Mr. Tumnus at the lamppost is genuine. She had not seen her castmate James McAvoy in his costume before the scene was filmed, so her screams and reaction were real. Georgie's first reaction to the snowy world of Narnia is also genuine. She was carried into the set blindfolded to make her first entrance, and her wide-eyed, delighted reactions to it, all are entirely her own.