The groom's proud parents Grand Duke Henri and Grand Duchess Maria Theresa beamed as Félix arrived to wed as did his siblings and sisters-in-law.
Prince Guilaume, Princess Stephanie, Prince Louis, Princess Tessy, Princess Alexandra and Prince Sébastien of Luxembourg made up the large party of Félix's excited family on his big day.
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The 29-year-old groom arrived with his mother Maria Theresa for his religious wedding ceremony on Saturday morning.
Both mother and son waved to the crowds who had gathered in the Provencal town of Saint-Maximin-la-Sainte-Baume to see the second-in-line to the Luxembourg throne marry his German love Claire.
The Grand Duchess sported a matching fuchsia coat, hat and shoes as she arrvied to see the third of her five children marry.
Félix's brother Prince Guillaume arrived with his wife Prince Stephanie, 11 months after their own lavish wedding which took place at the Cathederal of Our Lady of Luxembourg in October 2012.
Leading the other European royal guests was Prince Albert of Monaco's nephew Pierre Casiraghi and his girlfriend Beatrice Borromeo, who wore Armani Privé.
Stunning Beatrice wore an Armani Prive trouser suit and an unusual black headpiece as she walked to the church with Pierre.
Archduke Christoph and Archduchess Adelaide were also seen arriving for Felix and Claire's religious wedding service, which was conducted by Archbishop Jean-Claude Hollerich, followed by Princess Margaretha and Prince Nikolaus Of Liechtenstein.