Kate Middleton's Best Fashion Moments Through the Years

Kate wore Emilia Wickstead again in September for the RHS "Back to Nature" festival—this time opting for a long-sleeved, floral look from the designer, which £1,635 ($2,255). She paired the posh dress with uber-affordable, $6 earrings.

Kate wore a pretty, custom Emilia Wickstead dress for the Men's Finals Day of the Wimbledon Tennis Championships at All England Lawn Tennis and Croquet Club in London.

Kate looked classic in this black and white dress at day 2 of the Wimbledon Tennis Championships at the All England Lawn Tennis and Croquet Club in London.

Kate stunned in this off-the-shoulder gown at Addiction Awareness Week in London.

Kate looked chic and modern in a black and white striped top and high-waisted pants at the launch of the King's Cup Regatta at Cutty Sark, Greenwich in London.

Kate wore this beautiful blue coat dress with a matching fascinator to attend ANZAC Day Service of Commemoration and Thanksgiving at Westminster Abbey in London.

Kate nailed the preppy chic look in this grey and black dress that she wore to visit The Foundling Museum in London.

Kate channeled Harry Potter vibes in a baby-blue Mulberry coat (which she paired with navy Rupert Sanderson Malory pumps during a trip to Northern Ireland.

Kate stunned in this bright purple skirt and jacket set during a visit to The Royal Opera House in London.

For a Christmas party for families of military personnel deployed in Cyprus at Kensington Palace, Kate wore a perfect holiday look—a long, festive red skirt and a black sweater.

Kate wore a stunning burgundy jacket and matching skirt along with a black turtleneck, black tights, and black heels during visit to a UCL Developmental Neuroscience Lab in London.

Kate kept it casual in an earth-toned ensemble during a visit to Sayers Croft Forest School and Wildlife Garden in London.

Kate wore a gorgeous, sunshine yellow dress to the men's singles final at Wimbledon in 2018.

Kate wore a striped Zara dress, Russell & Bromley wedge espadrilles, and carried a Victoria Beckham tote to the Maserati Royal Charity Polo Trophy at Beaufort Polo Club in Gloucestershire.

Kate wore a cream Goat Fashion coat and a pair of black skinny jeans to a SportsAid event. This is the Duchess' final outing before she is due to give birth to her and William's third child.

The Duchess of Cambridge visited Pegasus Primary School in Oxford wearing an off-white JoJo Maman Bébé coat and carrying an Emmy London clutch.

The Duchess of Cambridge visited the Royal College of Obstetricians and Gynaecologists in London, wearing a polished blue coat and dress.

Kate wore a millennial pink Alexander McQueen floor-length ball gown with a Jimmy Choo clutch during a visit in Norway.

The Duchess wore an Erdem Christina blue velvet dress and Gianvito Rossi heels for a reception with Princess Victoria and Prince Daniel during her and William's second day in Sweden.

Kate is wearing a Catherine Walker & Co and carrying a a Chanel bag during her and Prince William's second day in Sweden.

Kate stunned in a yellow, floral gown from Erdem while her and Prince William met with Swedish prime Minister Stefan Löfven and his wife, Ulla Löfven, for a dinner at the British ambassador’s residence.

Kate shows off her baby bump in this light blue Natasha coat on her way to visit the Maurice Wohl Clinical Neuroscience Institute at King's College.

The Duchess caused a bit of a stir by not wearing her wedding ring when she visited the Great Ormond Street Hospital in this red "Lena-style" coat from Boden.

Kate visits Coventry Cathedral in bright pink Mulberry coat.

The Duchess of Cambridge wore a red and green plaid coat to Christmas Day Church service at Church of St Mary Magdalene.

Kate attends the "Magic Mums" community Christmas party held at Rugby Portobello Trust in a Seraphine bouclé coat.

Kate wore a baby blue embellished Jenny Packham gown at the Royal Variety Performance at the Palladium Theatre in London.

On the final day of their Germany and Poland tour, The Duchess wears a custom Emilia Wickstead dress and Gianvito Rossie heels.

Next stop: Germany, in sunny brocade Jenny Packham.

In Berlin, she wears German designer Markus Lupfer and a pair of heels with triple squiggly straps.