Most recently, Kate Middleton wore a stunning Miu Miu tartan coat to the Christmas Day service alongside Prince William, Prince Harry and Meghan Markle .
The Duchess of Cambridge, who is currently pregnant with her third child, wowed everyone with her festive outfit, proving The Kate Middleton Effect is still alive as thriving.
And from dressed down jeans to gorgeous maternity dresses, Kate, 35, has put together many outfits over the year that have caused a frenzy among her fashion followers.
But which of the royal’s outfit have caused the biggest sell out of 2017? We look back on some of her most popular outfits of the year.
Orla Kiely dress
Prince George and Princess Charlotte’s mum is undoubtedly good at maternity style.
So when she showed off the first signs of a baby bump in this faded pink Orla Kiely number, shoppers went wild.
Kate Middleton hides her bump under a baggy coat as she greets member of the Royal Ballet after a performance [Instagram/@meaghangrace890]
As she made a surprise visit to Paddington Station with William, she debuted the dress by designer Orla Keily, and it was a bargain (in terms of royals) a snip at just £139.
However fans desperate to get their hands on the knee-length dress were disappointed as the outfit sold out nearly immediately.
And people cannot get enough of her dressed down looks, too.
In late November, the Duchess stepped out to visit the Robin Hood Primary School to celebrate ten years of The Royal Horticultural Society campaign for school gardening.
Dressed down, she looked amazing in black skinny jeans, horse riding boots and a cable knit chunky blue and a Olive Barbour Filey Wax Jacket.
Originally £219, the number sold out at the time, but now it’s back in stock and on sale on John Lewis’s website from £103.
Heading to the Chelsea Flower Show in early summer, Pippa Middleton’s big sister opted for a new designer, Rochas.
The green floral midi dress was unusual for Kate, who usually chooses above-the-knee numbers and peplum styles, and despite the £1504 price tag and the mixed reviews, the dress has sold out immediately on Rochas website.