The royal mom joined the rest of the royal family on the Buckingham Palace balcony for Saturday's celebrations of the Queen's birthday
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Kate Middleton has added another fashionable Trooping the Colour appearance to her royal style résumé — and it has a sweet connection to sister-in-law Meghan Markle.

The royal mom of three joined the rest of the royal family for Saturday’s celebrations of the Queen’s birthday in a pale yellow ensemble by Alexander McQueen (her wedding gown designer!) and a matching hat by Philip Treacy with floral detail.

Kate is known for recycling favorite pieces from her closet — and today’s event was no exception. She previously wore her fashionable headtopper to Prince Harry and Meghan’s royal wedding last May. At the time, she paired the accessory with an off-white Alexander McQueen coat dress (which itself was a royal rewear from Princess Charlotte‘s 2015 christening and 2016 Trooping the Colour!) for the nuptials.

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Kate Middleton and Meghan Markle
| Credit: DANIEL LEAL-OLIVAS/AFP/Getty Images
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Prince Harry, Meghan Markle, Camilla, Duchess of Cornwall and Kate Middleton
| Credit: Neil Mockford/GC Images
Trooping The Colour
Kate Middleton
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Prince Harry Marries Ms. Meghan Markle - Windsor Castle
Princess Charlotte and Kate Middleton at Meghan Markle and Prince Harry’s royal wedding
| Credit: Andrew Matthews - WPA Pool/Getty Images)

That wasn’t the only royal wedding connection at Trooping the Colour this year! After choosing an open carriage in previous years, Queen Elizabeth arrived to the event in the closed Scottish State Coach — the same one that Princess Eugenie and Jack Brooksbank rode in after their October wedding. Although an open-air carriage ride was planned for the nuptials, windy weather meant a change in plans.

The Scottish State Coach was also used in 2011 to chauffeur Queen Elizabeth and Prince Philip to the wedding of Prince William and Kate Middleton.

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Queen Elizabeth arrives at Trooping the Colour
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Queen Elizabeth arrives at Trooping the Colour
| Credit: NEIL HALL/EPA-EFE/Shutterstock
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Jack Brooksbank and Princess Eugenie’s post-wedding carriage ride
| Credit: Press Association via AP Images

Fans got their first glimpse at Kate as she rode in a car with Prince William to the start of the parade route. She then hopped in a horse-drawn carriage to make her way to Buckingham Palace for the balcony appearance alongside Camilla, Duchess of Cornwall, and across from Prince Harry and Meghan Markle, who marked her first royal outing since welcoming son Archie.

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Kate Middleton
| Credit: Tim Rooke/Shutterstock
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Meghan Markle, Prince Harry and Kate Middleton
| Credit: Gareth Fuller/PA Images via Getty Images

Kate, 37, made her Trooping the Colour debut back in 2011, shortly after her royal wedding to Prince William — and she was still sporting her post-honeymoon tan!

For her first official ceremonial event as a royal, Kate wore a double-breasted cream jacket by Alexander McQueen (her wedding dress designer!) and a black hat. She traveled from Buckingham Palace to the Horse Guards Parade in Whitehall in a horse-drawn carriage, waving and smiling to the crowds on London’s Mall.

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Kate Middleton and Prince William at Trooping the Colour 2011
| Credit: Indigo/Getty
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Kate has continued to make stylish appearances at the annual event ever since, always opting for pastel colors that are perfect for summer.

Kate Middleton and family at Trooping the Colour 2017
| Credit: Chris Jackson/Getty Images
Trooping the Colour
Kate Middleton and family at Trooping the Colour 2018
| Credit: Yui Mok/PA Images via Getty Images

For last year’s event, the royal sported a light blue Alexander McQueen dress and a matching hat with floral details.