Honorary distinctions of the Grand Duchy of Luxembourg, publication of the government of Luxembourg : Princes and Princesses of the Grand-Ducal House of Luxembourg are Grand Crosses of the Order by birth but the decoration is worn only after they reach their majority (18 years old)
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Orders for services to the Royal HouseArxivat 2015-03-12 a Wayback Machine. - description at the website of the Dutch Royal House (Dutch language) : "Princesses (daughters of the Heads of the House of Nassau) receive the order at majority age (18), as decided in 1984 by Queen Beatrix and Grand-Duke Jean"
Orders for services to the Royal HouseArxivat 2015-03-12 a Wayback Machine. - description at the website of the Dutch Royal House (Dutch language) : "Princesses (daughters of the Heads of the House of Nassau) receive the order at majority age (18), as decided in 1984 by Queen Beatrix and Grand-Duke Jean"