He's one of Arnault's five children, all of whom hold senior positions in LVMH, the group behind fashion houses Louis Vuitton and Christian Dior, as well as labels from champagne to five-star hotels.
Arnault, who is married to Russian supermodel Natalia Vodianova, oversaw LVMH's communications and environmental issues. For a decade, he headed high-end label Berluti, known for expensive buffed leather shoes and bespoke tailoring for men.
His father Bernard has not publicly named a successor. According to Forbes, Bernard Arnault briefly took over the title of the world's richest man earlier this year, edging out Elon Musk, before slipping back to the number two spot. It was the first time a person outside tech landed at the top spot in nine years.
