Gilles Marini was born in Grasse, Alpes-Maritimes, France, to a Greek mother and Italian father. After working as a baker in his father's bakery since he was eight years old and completing high school, he joined the French army and was stationed in Paris, where he served as a fireman in the Paris Fire Brigade. It was in Paris where Marini met Fred Goudon, a photographer who introduced him to the world of modeling. After fulfilling his military duties, he went to the United States to learn English while working as a model.

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