At a young age he began sketching historical costumes and fashions.
Lacroix graduated from high school in 1969 and moved to Montpellier, to study Art History at the University of Montpellier. In 1971, he enrolled at the Sorbonne in Paris. While working on a dissertation on dress in French 18th-century painting, Lacroix also pursued a program in museum studies at the École du Louvre. His aspiration during this time was to become a museum curator.