Catherine, Duchess of Cambridge attends a service marking the centenary of WW1 armistice at Westminster Abbey on November 11, 2018 in London, England. Getty Images/Leon Neal

Kate Middleton's style has remained timeless and elegant since marrying Prince William and joining the British royal family. This year, she'd been pregnant with Prince Louis, given birth and attended royal engagements the entire time. But one thing that never changed is that Middleton has always looked stunning whether in a glamorous gown, tight-fitting pants or maternity dress.

Here are 10 of Middleton's best looks for 2018.

1. Middleton stunned in a blue, bell-sleeve bespoke dress from one of her favorite designers, Jenny Packham, when she visited the Imperial War Museum in London back in Oct. 31. She paired the gorgeous dress with tan Gianvito Rossi suede pumps and a Mulberry clutch.

Britain's Catherine, Duchess of Cambridge arrives for visit to the Imperial War Museum in London on October 31, 2018 to view letters relating to the three brothers of her great-grandmother ahead of Armistice Day. - Her Royal Highness visited the IWM London to view letters relating to the three brothers of her great-grandmother, all of whom fought and died in the First World War. Getty Images/Tolga Akmen

2. Middleton doesn't only look good in dresses and gowns, she can also rock skinny jeans. When she stopped by Coach Core on Oct. 30, she grabbed everyone's attention in her black and white glen plaid Smythe 2-button blazer, black turtleneck, skinny jeans and Russell & Bromley suede ankle boots.

Catherine, Duchess of Cambridge arrives at Basildon Sporting Village on October 30, 2018 in London, England. Getty Images/Tim P. Whitby

3. We know why Jenny Packham is one of Middleton's favorite designers -- it's because she always looks her best in dresses from the label. For the BAFTA Awards in London in Feb. 18, Middleton wowed the crowd in a green cap-sleeve gown from the label and emeralds. She was joined at the Royal Albert Hall by her husband, Prince William, who looked dashing in his tuxedo.

Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge attend the EE British Academy Film Awards (BAFTA) held at Royal Albert Hall on February 18, 2018 in London, England. Getty Images/Jeff Spicer

4. It didn't take long for Middleton to get back in her best shape after giving birth to Prince Louis. For her second outing post-maternity leave, Middleton rocked a lilac Emilia Wickstead wool-crepe dress when she attended the Global Ministerial Mental Health Summit with Prince William in October. This wasn't the first time she'd worn the dress. In fact, it is now known as the "Kate" and is available in pale pink. She accessorized the look with a matching taupe Aspinal of London Mayfair Bag and nude suede pointy toe pumps.

Britain's Catherine, Duchess of Cambridge attends the first Global Ministerial Mental Health Summit, co-hosted by the UK Government and the OECD, in London on October 9, 2018. - The Mental Health Summit will see political figures, leading academics and policy-makers from around the world come together with one common goal: better mental health for all. The meeting is set to help countries work together to deal with stigma attached to mental health and address other issues to do with mental ill-health. Getty Images/Eddie Mulholland

5. Middleton went solo for an event at the Victoria and Albert Museum, for which she is a royal patron. But despite the lack of companion, the duchess shined in a deep purple, tweed off-the-shoulder Erdem dress. She paired the dress with "Romy" style Jimmy Choo velvet heels, Erdem floral hoop earrings and a Jimmy Choo "J Box" clutch.

Britain's Catherine, Duchess of Cambridge, arrives to officially open the new photography centre at the Victoria and Albert (V&A) Museum in west London on October 10, 2018. - Designed by David Kohn Architects, phase one of the Photography Centre more than doubles the space dedicated to photography at the V&A, spanning four new galleries. The first exhibition in the new wing explores photography as a way of collecting the world, from the mediums invention in the 19th century to the present day. Getty Images/Jack Hill

6. Middleton looked every inch the future queen she is during the State Banquet at Buckingham Palace on Oct. 23. She wore a sleeveless, figure-fitting blue Alexander McQueen gown for the event. But her dress was outshined by her bling that night as she accessorized with Princess Diana's favorite Lover's Knot tiara, along with teardrop pearl earrings and a diamond and pearl necklace that once belonged to Queen Alexandra.

Catherine, Duchess of Cambridge during a State Banquet at Buckingham Palace on October 23, 2018 in London, United Kingdom. King Willem-Alexander of the Netherlands accompanied by Queen Maxima are staying at Buckingham Palace during their two day stay in the UK. The last State Visit from the Netherlands was by Queen Beatrix and Prince Claus in 1982. Getty Images/John Stillwell

7. The duchess looks stunning even in simple ensembles. When she hosted a tea for the BBC Radio 1 Teen Hero award winners at Kensington Palace, she donned a burgundy and white polka dot dress from British label Whistles. She accessorized with gold Cassanda Goad chandelier earrings.

8. Middleton rewore a Jenny Packham floor-length teal gown when she and Prince William attended a gala for one the Duke of Cambridge's charities, Tusk. She paired the gown with a matching teal satin clutch.

Catherine, Duchess of Cambridge attends The Tusk Conservation Awards at Banqueting House on November 08, 2018 in London, England. Getty Images/Jeff Spicer

9. The Duchess of Cambridge looked effortlessly elegant in her emerald green Catherine Walker coat during the Remembrance Day service at Westminster Abbey on Nov. 11, according to People. This was a recycled piece that she first wore for St. Patrick's Day in 2017. This time, she paired the outfit with a stunning Jane Taylor headband and Jimmy Choo bag and pumps.

10. Middleton kept it lowkey when she and Prince William hosted a Christmas party for military service members on Dec. 4. She rocked a festive Emilia Wickstead tartan skirt, Brora cropped cashmere cardigan and black suede boots for the event.

Catherine, Duchess of Cambridge laughs as a machine sprays snow ahead of her hosting a Christmas party to deliver a message of support to deployed personnel serving in Cyprus and their families over the festive period, at Kensington Palace on December 04, 2018 in London, England. Approximately 7,500 military personnel are currently serving overseas at Christmas. Getty Images/Stuart C. Wilson

What was your favorite Kate Middleton look for 2018? Tell us in the comments!