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Kieran and Macaulay Culkin‘s childhood stardom thrust them into the spotlight at a young age but in very different ways. Macaulay, who is two years older than Kieran, shot to fame at the age of 10 as Kevin McCallister in the beloved holiday franchise, Home Alone. Kieran played his younger brother in those films, but it was the Father of the Bride series of movies that really catapulted his young career.