You probably have one already.

She can afford to pay for the best beauty treatments in the land – and could probably, should she wish to, slather her entire being in Creme de la Mer around the clock – but when it comes to her beauty regime, Kate Middleton is apparrently a fan of a simpler solution. According to makeup artist Arabella Preston, who was the beauty guru in charge of teaching the Duchess how to do her makeup fo her wedding day, Kate relies on a flannel in order to achieve her famous dewy complexion.

Speaking to The Cut, Preston explains that the humble flannel 'is an essential part to making sure you wash your face cleanly.'

Explaining how this bargain tool can change the way you clean your face, the makeup artist explains: "It's all about the flannel and it's quite necessary. More gentle than any motorized cleanser brush, the right flannel will allow you to cleanly wipe makeup and dirt from your skin and gently exfoliate." We are tempted to think Preson knows what she is talking about, considering she, as well as being the Duchess' go-to guru for all things beauty, also can list celebrities like Daisy Lowe and Lily James among her clients.