The owner of Sandro, Maje and Claudie Pierlot is expecting a constant-currency sales increase of between 9 and 11 percent this year as it continues to grow its footprint, especially in China.
Zazie Beetz, Gwendoline Christie and Eliza Scanlen were also among the familiar faces sitting front row.
Jonathan Cohen was planning a trip to the flea markets, while Raul Lopez hoped to head out to Versailles.
The princess, editor and influencer has created three looks for the growing Argentine label, which takes its inspiration from gaucho style.
Lewis Hamilton, Maisie Williams and Janelle Monáe were also among the front-row guests.