LVMH CEO Bernard Arnault attended with his wife Helene Mercier and two of his children, Delphine Arnault and Alexandre Arnault. All of Arnault's five children hold prominent positions in his luxury-goods group, the world's largest. Delphine Arnault heads the fashion label Dior, while Alexandre, who has played a key role rebranding its American jewelry label Tiffany & Co, is returning to France from the United States to help run the group's wines & spirits division. The Arnault family is France's wealthiest, with a holding in LVMH worth around $200 billion.