The royal is up against the likes of Priyanka Chopra and Victoria Beckham for the International Fashion Icon Award.
The royal kick-started this year's fashionable proceedings in a lace Elie Saab ensemble.
From tailored co-ords to the morning suit, what guests can wear to this year's Royal Ascot.
The Duchess of Sussex has been crowned the most influential royal.
The trend has been given the Buckingham Palace stamp of approval.