Arnault, the second eldest son of LVMH Moët Hennessy Louis Vuitton CEO/chairman Bernard Arnault, was recently named Tiffany & Co.'s executive vice president of product and communications at the top of the year. Guyot is the founder of the French high-end accessories brand D'Estrëe. In February, Moët Hennessy bought a 50% stake in Jay-Z's champagne brand Armand de Brignac, known familiarly as Ace of Spades.