The Duchess of Cambridge joined her new sister-in-law for day 12 of Wimbledon in a Jenny Packham midi dress accessorised with a Dolce and Gabbana handbag. [Photo: Getty]

The Duchess of Cambridge wore an ice blue dress by Alexander McQueen for the RAF’s centenary celebrations on July 10, 2018. [Photo: Getty]

For the christening of her third child, Prince Louis, the Duchess of Cambridge wore a cream-hued Alexander McQueen dress finished with a Jane Taylor headpiece. [Photo: Getty]

For the Duke and Duchess of Sussex’s royal nuptials, the Duchess of Cambridge wore a primrose yellow coat dress by Alexander McQueen. She first donned the look at Princess Charlotte’s christening in white. [Photo: Getty]

For her third Lindo Wing exit, the Duchess of Cambridge chose yet another Jenny Packham dress. This time, she opted for a poppy red hue. [Photo: Getty]

The Duchess of Cambridge marked her final public appearance before welcoming Prince Louis at an Easter service on April 1, 2018.

The Duke and Duchess of Cambridge attended a SportsAid event at Olympic Park in Stratford on 22 March. The event marked the 36-year-old’s final royal engagement before preparing to welcome baby number three. For the occasion, the royal donned skinny jeans and her go-to coat by Goat. [Photo: Getty]

For one of her final royal engagements before maternity leave, the Duchess of Cambridge welcomed spring in a mint Jenny Packham ensemble. She accessorised the look with a co-ordinating Loeffler Randall clutch and Gianvito Rossi heels. [Photo: Getty]

On March 17, the Duchess of Cambridge wrapped up to celebrate St Patrick’s Day in a suitably green Catherine Walker coat and Gina Foster hat. [Photo: Getty]

On February 18, the Duchess of Cambridge wore a deep green dress by Jenny Packham for the BAFTA 2018 ceremony. Many believe that her black belt was a subtle nod to the Time’s Up movement which saw A-listers don black on the red carpet. [Photo: Getty]

For a dinner at the Royal Palace in Oslo, the Duchess of Cambridge wore a floor-skimming pink gown by Alexander McQueen (complete with a cape). [Photo: Getty]

The Duchess of Cambridge chose a velvet Erdem midi dress for the final night of the royal tour of Sweden. She accessorised the £2,690 look with a pair of earrings by Robinson Pelham and Gianvito Rossi heels. [Photo: Getty]

The Duchess dressed her bump in one of her chicest looks to date to visit Matteusskolan School in Sweden on January 31, 2018. She teamed a houndstooth coat with a Chanel handbag and co-ordinating shoes. [Photo: Getty]

For a formal dinner in Stockholm, the 36-year-old dressed her bump in a floral-emblazoned Erdem dress on January, 30. [Photo: Getty]

The Duchess of Cambridge donned a shearling coat by Burberry with Sorel snow boots for the first day in Stockholm. She finished the look with a burgundy jumper by Swedish label, Fjällräven and a faux fur bobble hat from Eugenia Kim (FYI, it sold out instantly). [Photo: Getty]

The Duchess made her first public appearance after announcing that she was pregnant with her third child at Buckingham Palace on October 10. She opted for a blue lace dress by Temperley London known as the ‘Eclipse’ gown. [Photo: Getty]

For a trip to the Warsaw Museum in Poland, the Duchess of Cambridge opted for a peplum skirt suit by Alexander McQueen. [Photo: Getty]

The Duchess of Cambridge wore a blush-hued dress by Alexander McQueen for her sister Pippa Middleton’s wedding on May 20, 2017. [Photo: Getty]

For the first day of Royal Ascot 2017, the Duchess of Cambridge opted for a lace midi dress by Alexander McQueen. The look was reminiscent of a Dolce and Gabbana number she wore to the event. She teamed the dress with Gianvito Rossi heels. [Photo: Getty]

On February 12, the Duchess broke royal protocol in a cold-shoulder floral dress by Alexander McQueen. [Photo: Getty]

The Duchess dressed diplomatically for an evening reception in Canada thanks to a red Preen dress accessorised with a maple leaf brooch. She finished the ensemble with a matching suede clutch and shoes. [Photo: Getty]

The Duchess wore a cream-hued Self-Portrait dress for the UK premiere of ‘A Street Cat Named Bob back in November 2016. [Photo: Getty]

The Duchess of Cambridge visited a Vogue exhibition at the National Portrait Gallery on May 4, 2016. For the event, she chose a sweet pink peplum dress by one of her favourite labels, Alexander McQueen. As usual, an L.K. Bennett clutch and shoes completed her ensemble. [Photo: Getty]

The Duchess chose a white ensemble by Emilia Wickstead along with neutral Rupert Sanderson heels for a trip to a war memorial in India. [Photo: Getty]

Opting for a navy polka dot gown by Saloni, the Duchess of Cambridge attended a reception at Kensington Palace on April 4, 2016. She finished the look with a pair of co-ordinating Rupert Sanderson heels. [Photo: PA]

The Duchess went for an unusually louder look for a dinner in London back in October 2015. Dressed in a floral silk gown by Erdem, she carried an Anya Hindmarch clutch and finished with suede Jimmy Choos. [Photo: Getty]

The Duchess wore a bespoke white Alexander McQueen coat dress for Princess Charlotte’s christening. Teaming the look with a matching floral Jane Taylor hat, Kate finished with nude Russell & Bromley heels. [Photo: Getty]

Welcoming Princess Charlotte to the world, the Duchess chose a bespoke Jenny Packham dress complete with a sweet buttercup print. She paired the look with nude Jimmy Choo pumps. [Photo: Getty]

On March 11, 2015 the Duchess visited the Turner gallery in Margate decked in a leopard print coat by Hobbs. The Duchess of Cambridge accessorised the look with a black Mulberry clutch. [Photo: Getty]

Pregnant with Princess Charlotte, the Duchess of Cambridge attended the 2014 Royal Variety Performance in a lace gown by Diane Von Furstenberg. [Photo: Getty]

The Duchess donned a lemon yellow Alexander McQueen look complete with a matching Jane Taylor hat for Prince George’s christening back in October 2013. [Photo: Getty]

Kate welcomed Prince George in a bespoke blue-and-white polka dot dress by Jenny Packham. On her feet, the Duchess chose cream wedges from Pied a Terre. [Photo: Getty]

Kate donned a bouclé-effect coat by Mulberry for The National Review of Queen’s Scouts in April, 2013. She accessorised the look with taupe heels by LK Bennett. [Photo: Getty]

The Duchess spent a day in the Solomon Islands in a primrose yellow dress featuring a broderie anglaise design. She teamed the look with Stuart Weitzman wedges. [Photo: Getty]

Kate wowed the crowd at a BAFTA celebration in LA in a lilac Alexander McQueen gown. She paired the look with silver Jimmy Choo sandals and a matching clutch. [Photo: Getty]

The Duchess demonstrated how the royals tackle the western trend in a chic cowboy hat and flared jeans while on an engagement in Calgary.

The Duchess of Cambridge touched down in Calgary in style thanks to a punchy yellow dress by Jenny Packham. The Canadian pitstop marked their eighth day of their first overseas tour. [Photo: Getty]

Kate arrived at a gala dinner back in June 2011 in a sequinned gown by go-to label Jenny Packham. She finished the look with co-ordinating L.K. Bennett sandals and a Prada clutch. [Photo: Getty]

Kate again wore Reiss for a meeting with Barack and Michelle Obama. Wearing a camel dress, she finished the look with a silk Anya Hindmarch clutch and black L.K. Bennett heels. [Photo: Getty]

Kate and William leave Buckingham Palace the day after their wedding with the Duchess dressed in a casual blue Zara dress with patent L.K. Bennett wedges and a simple black jacket. [Photo: Getty]

For her big day, the Duchess of Cambridge opted for a lace gown designed by Alexander McQueen’s Sarah Burton. The floow-sweeping number incorporated lace, floral motifs and a seriously impressive train. It reportedly cost £250,000 and sparked a mass number of copies. [Photo: Getty]

On November 16, 2010 the Duke and Duchess of Cambridge announced their engagement to the world. For the couple’s photocall, Kate opted for a suitably royal blue dress by Issa. [Photo: Getty]