Kate Middleton won't leave home without her $65 Superga sneakers -- and they're on major sale right now

AOL.com Editors

We know the "Kate Effect" is real -- anything the royal wears immediately sells out within days. According to reports, the duchess has garnered over $1 billion for the UK economy due to her trendsetting fashion choices, a financial impact that her children have also had as well. 

And while the royal is known for her high fashion looks, it's frequently her affordable style that sells out and puts thousands of shoppers on waitlists. Take her favorite sneakers, for example. Her $65 white Superga shoes have doubled sales for the brand since she started wearing the sneakers and are often sold out once the duchess is photographed wearing them.

A major bonus for royal fans? Her beloved sneaks are on sale at Nordstrom for 20 percent off right now! 

Shop: Superga Cotu sneaker, $50,98 (Orig. $65)

"We are both honored and excited that the Duchess of Cambridge has chosen to wear our shoes on several occasions, each time Kate wears Superga both our own website and stores see a significant increase in demand," explained head of marketing Jason Fairclough to the Daily Mail

We first noticed the sneakers on the duchess back in 2016 during her royal tour of Canada. Since then, Kate's opted for the affordable brand for a variety of off-duty and royal events, including attending the London marathon, a rowing race and during the royal tour of Germany and Poland. You can purchase her favorite shoes, which come in white amongst other colors and patterns, on Nordstrom's website

For more of Kate's best casual looks, watch the video above. 

See more: Kate loves her Supergas