The princess was seen donning a Grandpa-core waistcoat featuring a Fair Isle-style heart design. The soft woollen number was styled over a roll-neck jumper by Zara and teamed with a black A-line skirt and flat boots from Tod's.
Kate wore the waistcoat during her curling attempt
Though not the most glamorous name, Grandpa-core is a trend that is dominating social media, with the style set including models Gigi Hadid and Alexa Chung stepping out in oversized statement knitwear and corduroy trousers galore.
The Princess of Wales' waistcoat featured a Fair Isle design
"Goodbye, coastal grandma, hello, Grandpa Core. Think gender-neutral staples that prioritise comfort without sacrificing style," fashion stylist of over 15 years Caroline Sullivan tells us. "Nostalgic silhouettes, timeless layers, and pieces that feel borrowed from a well-dressed grandfather’s wardrobe. At the forefront of the trend? The argyle sweater vest. Playful yet surprisingly versatile, and it's far easier to style than you might expect."
Recommended videoYou may also likeWATCH: Princess Kate's best fashion moments
On that topic, Caroline has shared her tips for styling a grandad-core waistcoat like Kate's...
William held Kate's coat as she tried her hand at tartan weaving
Anchor the look with accessories – a timeless loafer, a leather belt and wire glasses fully tap into the Grandpa-core aesthetic.
Keep things effortless by pairing it with loose-fit vintage denim for an easy, off-duty feel.
When it comes to layering, stick to the classics: wear the vest over a crisp button-down shirt, then finish with a trench coat for a polished, considered look.
The Princess of Wales teamed a knit cardigan with a tartan skirt for her 2018 festive outing
Kate's statement waistcoat isn't her only piece of stylish knitwear. She rocked a cropped black cardigan in 2018 while attending a party for families of military personnel deployed in Cyprus at Kensington Palace.
She styled the Brora piece with a red tartan skirt by Emilia Wickstead and wore her hair, which was cut to shoulder length at the time, in loose waves.
Kate wore her granny aesthetic Miu Miu cardigan in 2023
Meanwhile, the royal has reserved her Miu Miu 'granny' cardigan for festive occasions, including in 2023, while appearing in a series of behind-the-scenes clips ahead of the 'Together at Christmas' carol service that year.
Sign up to HELLO Daily! for the best royal, celebrity and lifestyle coverage
By entering your details, you are agreeing to HELLO! Magazine User Data Protection Policy. You can unsubscribe at any time. For more information please click here.
The Princess of Wales featured in a new photo, shot by Josh Shinner, for the royal family Christmas card, alongside William, George, Charlotte, and Louis
