Quizzed about her go-to labels when it comes to evening wear, Zara told the Telegraph: “I’ve no idea, I can’t even answer that one.”

The down-to-earth royal went onto say she favoured “stretchy skinny jeans” over haute couture.

Zara, who has her sights set on riding for Britain in the 2020 Olympics, is currently the face of a new collaboration between Landcover and outdoor Sports brand Musto.

She added: “My horsebox is very much a wardrobe of Musto.

“I must have every piece of clothing that Musto does.”