All the times Prince Harry, Meghan Markle, Prince William and Kate Middleton were the ultimate Fab Four

It's been over two years since the Fab Four was born, with the newly engaged Prince Harry taking his future wife Meghan Markle to church alongside the Duke and Duchess of Cambridge. Following the news of their engagement, the two royal couples vowed to collaborate on projects close to their hearts - delighting royal watchers from across the globe.

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Since then, Prince Harry and Meghan have been pictured with Prince William and Kate on a handful of occasions. However, as we prepare for the Duke and Duchess of Sussex's departure from the UK, here at HELLO!, we take a look back at their amazing Fab Four moments.

Christmas Day, December 2017

Royal fan Karen Anvil made headlines after she took an incredible photo of Prince William, Kate, Prince Harry and Meghan in Christmas 2017. It was the couples' first outing at Sandringham together and Meghan's first experience of a royal Christmas. Karen's photo of the Fab Four smiling directly at her made the cover of HELLO! magazine and other publications and newspapers.

Royal Foundation Forum event, February 2018

On their first official joint appearance together, the two royal couples' friendship was clear to see. They were all smiles as they took to the stage at the Royal Foundation Forum. The event was themed 'Making a Difference Together', and was designed to showcase programmes run by The Royal Foundation, including causes close to them, such as Heads Together and the Invictus Games.

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Commonwealth Day service, March 2018

One month later, the "Fab Four" were back together again. The four young royals arrived at Westminster Abbey in a group to attend the Commonwealth Day service. Meanwhile, Meghan's attendance at the service marked a major milestone for the then bride-to-be, as it was the first time she took part in an official event with the Queen.

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Trooping the Colour, June 2018

Prince Harry and Meghan looked picture perfect as they attended their first Trooping the Colour as a married couple. They joined Prince William and Kate and the rest of the royal family on the balcony of Buckingham Palace to greet crowds and watch the spectacular RAF flypast - this was Meghan's first appearance on the iconic balcony.

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Centenary of the RAF, July 2018

The following month, the two royal couples were reunited as they arrived together at Westminster Abbey to celebrate the Royal Air Force's centenary year. The service was then followed by a Buckingham Palace royal salute and a flypast.

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Princess Eugenie and Jack Brooksbank's wedding, October 2018

Just days before Prince Harry and Meghan announced their pregnancy news, they joined Prince William and Kate at Princess Eugenie's wedding to Jack Brooksbank. The four were seen sat in their pews having a great catch up before the ceremony took place St George's Chapel.

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The Centenary of WW1 Armistice, November 2018

The two couples joined other members of the royal family at a special service, which was held at Westminster Abbey to mark the centenary of the Armistice. The appearance comes shortly after the royals were at the Cenotaph to honour the country's war heroes on Remembrance Sunday. The Dukes and Duchesses of Cambridge and Sussex were seen talking together after the service ended.

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Christmas Day, December 2018

Prince Harry and Meghan arrived arm-in-arm alongside Prince William and Kate. Meghan, who was pregnant with Archie at the time, looked delighted to be celebrating Christmas at Sandringham.

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Commonwealth Day service, March 2019

Prince William and Kate, and Prince Harry and Meghan, were among the royals to attend the Commonwealth Day service last year. Kate and Meghan brought the glamour, arriving in style alongside their husbands. The Duchess of Cambridge was dressed to the nines in a bold red coat, while her sister-in-law Meghan, who was heavily pregnant, looked radiant in a pristine white coat, black-and-white dress and white hat.

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Commonwealth Day service, March 2020

On Monday, Meghan and Prince Harry attended the 2020 Commonwealth Day service with senior royals at Westminster Abbey – their last official engagement before they step back from royal duties on 31 March. In contrast to last year's event, the couple were shown to their seats and did not wait at the Abbey's great west door for the procession at the start of the ceremony. Perhaps in acknowledgment of the Sussexes' final outing, Prince William and Kate also opted not to walk in the procession.

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