She wore an Alexander McQueen long-sleeved green gown to present an award at the Sports Personality of the Year Awards in London.
Ever since being spotted on the arm of Prince William, back in 2004, the now Duchess of Cambridge has seen her every style move fall under the closest scrutiny.
Since marrying her Prince in a gown custom made by Sarah Burton for Alexander McQueen, which won nods of approval unanimously from the international fashion press, she has become an ambassador for British fashion - both high street and designer.
The announcement of her pregnancy only served to notch up the attention on the Duchess' fashion sense. Maternity style didn't appear to phase her though, with pastel hues and empire-line shift dresses emerging as her staples.
The Duchess was unveiled as Vogue's centenary cover star in April 2016 - she was photographed by Josh Olins for the shoot, the first time she had consented to be shot for a magazine.
March 30, 2004,
On a skiing holiday in Klosters, Switzerland - one of the first times an image of her with Prince William appeared in the press.
3 June 4 2005
She attended the wedding of Hugh Van Cutsem Junior and Rose Astor - at which Prince William was an usher - wearing a lace pencil skirt with a cream blazer and black fascinator.
Wearing a floral blouse and Diesel Ronhoir jeans.
September 18 2008
In a pair of neon yellow hotpants and a green sequin top, accessorised with with a fuchsia Mulberry bag, for a charity roller disco in London.
November 16 2010
For the press announcement of her engagement to Prince William she was dressed in a sapphire blue dress by Issa. It was the first time she was photographed wearing her 18-carat engagement ring, which had belonged to William's mother Diana, Princess of Wales.
January 8 2011
She wore a dress coat by Libelula to the wedding of Harry Aubrey-Fletcher and Sarah Louise Stourton at St Andrew's Church in Aldborough.
May 24 2011
For her first official engagement as the Duchess of Cambridge she wore a Reiss dress, accessorised with an Anya Hindmarch clutch, to meet Michelle Obama during the President's official visit to London. The First Lady wore a dress by Barbara Tfank.
July 10 2011
She wore an ensemble by Whistles for a reception to mark the launch of Tusk Trust's US Patron's Circle in Santa Barbara, where she was joined by Reese Witherspoon.
July 1 2011
She wore the Reiss white dress first seen in her official engagement portrait - taken by Mario Testino - for Canada Day celebrations in Quebec. Her red hat featured maple leaves - a mark of respect to her host country - while her fan-shaped clutch was by Anya Hindmarch.
July 19 2012
She wore a Stella McCartney cobalt dress and a Trinity de Cartier necklace for a visit to London's National Portrait Gallery, where she attended the opening of the Road To 2012: Aiming High exhibition - comprised of specially-commissioned portraits of Olympic athletes.
September 18 2012
She took part in a traditional welcome dance after landing in Tuvalu, wearing a grass skirt and headpiece.
She joined the Countess of Wessex and Duchess of Cornwall at the Order of the Garter service and wore an Alexander McQueen coat dress, accesorised with a Jane Corbett hat and nude heels.
She wore an Alexander McQueen ruffle-front dress and a Jane Taylor hat for the christening of her son, Prince George.
April 9 2014
She wore an Alexander McQueen coat for a visit to Blenheim, where the royal couple took part in a service of remembrance for New Zealand's war dead.
March 12 2015
She wore a Jojo Maman Bebe coat to visit the Ealing Studios.
April 10 2016
She wore an Anita Dongre dress to take part in a game of cricket with local children at the Mumbai Oval Maidan ground.
June 12 2017
She visited Kings College Hospital in south London to meet staff and patients who were affected by the terrorist attacks in London Bridge and Borough Market wearing a navy tweed outfit and matching heels.