April 29 2026 marks 15 years since 29-year-old Kate Middleton became an official member of the British royal family. She walked into Westminster Abbey in her Alexander McQueen gown ‘a commoner’ and came out a Princess.

Royal Wedding | ELLE UK

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Since then, much has changed. King Charles is now on the throne, the nation and the world has been through seismic era-defining events, while closer to home the now Princess of Wales has become a mother of three after giving birth in 2013, 2015 and 2018, as well as undergoing her a battle with cancer. She has moved on from a 29-year-old girlfriend of the second in line to the throne to now, at 44, one of the country’s most loved public figures and an important component of The Firm.

(l to r) britain's prince richard, duke of gloucester britain's princess anne, princess royal, britain's prince william, prince of wales, britain's king charles iii, britain's catherine, princess of wales and britain's queen camilla arrives to attend the annual commonwealth day service ceremony at westminster abbey in london, on march 9, 2026. (photo by aaron chown / pool / afp)

AARON CHOWN

Over the course of the last 15 years, Catherine has emerged as one of Britain’s most important dressers. As to be expected, she’s moved on from what she wore in her early royal years to something more discerning, speaking to her own maturity and her growing confidence as a Queen In Waiting.

london, england april 25: catherine, princess of wales attends the wreath laying and parade service as part of the anzac day commemorations at cenotaph on april 25, 2026 in london, england. (photo by samir hussein/wireimage)

Samir Hussein

The change has been slow and quiet, with no jolting sartorial moves. Instead, a concerted effort to move both with the changing seasonal trends but also her own growing confidence and understand of what works for her when in the public eye.

Here, the seven significant fashion changes that have marked Catherine, Princess of Wales’ sartorial evolution in her first 15 years as a Windsor.

Then: Nude Platform Court Shoes
Now: 105mm Coordinating Pointed Pumps

If the young Duchess of Cambridge was known for one piece of clothing, it was her nude LK Bennett pumps. The platformed glossy patent shoe was her go-to choice for her first few years in the public eye and were as representative of the era as her place in the spotlight. The silhouette was routinely worn by young British women for formal occasions (inclusive of university club nights), while the nude shade offered a demure finishing touch. Today, Catherine favours a very high pointed suede shoe that often matches her clothing to finish the look with exacting matchy-matchiness, always wearing the sky-high pitch with an enviable ease.

kate middletonkate middleton shoesGianvito Rossi 105 Suede Pumps105 Suede Pumps
Then: A-Line Dresses
Now: Contemporary Tailoring

The Princess of Wales has swapped out the A-line dresses that once dominated in favour of more tailored pieces that present a more streamlined silhouette. Be it classic suiting or stately coat dresses, Catherine has cut out the noise to simplify with a new sense of minimalism that wasn’t so plain to see before. The result is one that is more akin to a business dress than the more typical Princess-like dresses she wore for daytime events in the 2010s.

london, england march 15: catherine, duchess of cambridge visits the princes foundation for children and the arts at dulwich picture gallery on march 15, 2012 in london, england. (photo by danny martindale/wireimage)

Danny Martindale

princess of wales

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M&S Single-Breasted BlazerSingle-Breasted BlazerThen: Short Skirts
Now: Longer Lengths

Another change that hints at a growing maturity is Catherine’s choice to lower hemlines. When she first married into the royal family, Catherine would often wear skirts and dresses that fell above the knee but she has instead swapped them for mid-lengths that fall to just north of the ankle. The resulting look is not only one that appears more modest, but also speaks to the general vogue for the in-between length.

london, england january 28: catherine, duchess of cambridge joins a workshop run by the national portrait gallerys hospital programme at evelina childrens hospital on january 28, 2020 in london, england. hrh is patron of evelina london childrens hospital and patron of the national portrait gallery. (photo by karwai tang/wireimage)

Karwai Tang

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Emilia Wickstead Seema DressSeema DressThen: Clutch Bags
Now: Top-Handle Bags

The Princess of Wales still uses her clutch bags, but there’s a new shape that’s vying for the place as her wardrobe’s most-worn: top-handle bags. Catherine’s update again feels more true to wider fashion trends, while still remaining royal walkabout-appropriate. Her favourites include Chanel, but also more modestly priced options from newer brands like De Mellier.

kate middleton style

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princess of wales

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DeMellier The Nano MontrealThe Nano MontrealThen: Blue Skinny Jeans
Now: Khaki Skinny Cargo Pants

Like many of her millennial peers, Catherine can’t let the skinny trouser silhouette go, especially when it comes to pairs for more relaxed or active pursuits. Where once she would pair espadrille wedges with blue skinny jeans, Catherine now chooses khaki cargo pants instead. They feel more modern, but also more in-keeping with her surrounds and pair well with her favourite hiking boots.

london, england july 31: catherine, duchess of cambridge attends the show jumping eventing equestrian on day 4 of the london 2012 olympic games at greenwich park on july 31, 2012 in london, england. (photo by pascal le segretain/getty images)

Pascal Le Segretain

merthyr tydfil, wales april 27: catherine, princess of wales visits dowlais rugby club during a 2 day visit to wales on april 27, 2023 in merthyr tydfil, wales. the prince and princess of wales are visiting the country to celebrate the 60th anniversary of central beacons mountain rescue and to meet members of local communities.

Samir Hussein

Khaki TrousersThen: Fascinators
Now: Impressive Hats

What separates the Princess of Wales sartorially from other women her age is the regular need for a hat. While some might opt in for Royal Ascot or a particularly fancy wedding, there’s rarely an opportunity that actually requires one. Catherine has embraced this need by saying ‘goodbye’ to the dated fascinators she once clipped into her bouncy blow dry and replaced them with a variety of hat shapes that speak to her feeling more comfortable in the piece. From wide-brim to pillbox to those decorated with bows, flowers or frills, Catherine has become an important millinery presence.

bangor, united kingdom february 24: (embargoed for publication in uk newspapers until 48 hours after create date and time) kate middleton attends the naming ceremony and service of dedication of the atlantic 85 lifeboat hereford endeavour at trearddur bay lifeboat station at anglesey on february 24, 2011 in bangor, wales. (photo by indigo/getty images)

Max Mumby/Indigo

london, england april 25: (embargoed for publication in uk newspapers until 24 hours after create date and time) catherine, princess of wales attends the anzac day service of commemoration and thanksgiving at westminster abbey on april 25, 2026 in london, england. anzac day is the national day of remembrance in australia and new zealand marking the anniversary of the anzac (australian and new zealand army corps) landings at gallipoli in 1916 during the first world war and commemorates all australians and new zealanders who have lost their lives in conflict. (photo by max mumby/indigo/getty images)

Max Mumby/Indigo

Jane Taylor London Selene Wool Felt Cocktail Hat in PeacockSelene Wool Felt Cocktail Hat in PeacockThen: Middleton Family Diamonds
Now: The Royal Family Heirlooms

The Princess of Wales arrived at her wedding in 2011 wearing Queen Elizabeth II’s Cartier Halo tiara but also a pair of earrings from her parents. Since then, she has further embraced the Royal Jewellery Box (who wouldn’t?), regularly wearing pieces that have been worn by her husband’s ancestors for hundreds of years. Be it Diana, Princess of Wales’ penchant for a sapphire or Queen Elizabeth’s pearls, the Princess has become a loyal enthusiast for the family sparkle.

princess of wales

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princess of wales

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Wave Antiques Sapphire And Diamond Cluster Drop EarringsSapphire And Diamond Cluster Drop Earrings

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Naomi Pike is the commissioning editor at ELLE UK. Her expansive role moves between editing the front of book, covering runway fashion and cultural trends, writing cover stories and well features, as well as commissioning best-in-class contributors. An experienced host, Naomi regularly chairs ELLE’s panels and reader events as well as interviewing talent on camera. Naomi started her career at British Vogue and has since written through her freelance career for The Guardian, The CUT, American Vogue, The Daily Telegraph, Porter, and The Sunday Times STYLE. Follow her on Instagram at @naomialexandrapike

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