Kate Middleton's favourite sneakers are less than $100

Catherine, Duchess of Cambridge at the The Virgin Money London Marathon. Photo / Getty Images

It's safe to say that wherever Kate Middleton goes (fashion-wise), we follow. And it's usually an expensive journey.

Which is why fans of the stylish royal will be thrilled to hear that her current preferred footwear is a pair of basic white Superga sneakers with a price tag of just $98.10.

Kate Middleton in her Superga sneakers. Photo / Getty Images

Sure, they cost a pinch more than your average Kmart sandshoes, but given the outrageous prices of brands usually favoured by the rich and fashionable, this endorsement is certainly a welcome relief.

Duchess Kate debuted the sneakers while attending the 2017 Virgin Money London Marathon alongside Prince William and Prince Harry on the weekend.

The three royals officially launched the race, before cheering on participants and handing out bottles of water.

Photo / Getty Images

Kate paired the shoes with basic black pants and a black Heads Together jacket - in support of the event's mental health awareness charity - and her trademark impeccable blow-dry.

The look was a far cry from the $10,000 Temperley dress she donned last month for a fundraising gala at the National Portrait Gallery in London.

Kate wore a sleeved lace frock by London-based designer Temperley. Photo / Getty

She teamed the floor-length gown with a set of $14,000 ruby and citrine earrings by Kiki McDonough, along with a gold Wilbur & Gussie clutch and metallic Jimmy Choo heels.