Yesterday Prince William and Kate Middleton stepped out for their first ever joint appearance at a Buckingham Palace Garden Party. The royal couple supported William's grandmother Queen Elizabeth, who had invited over 8,000 people who have made their mark in public life to enjoy tea and sandwiches with the royal family members at the palace.Click through for all the highlights!Photo: Getty Images
Queen Elizabeth was joined by a host of royal family members for the event. Prince Philip was on hand to support his wife, as was the Queen's grandchildren Prince William – with Duchess Kate, of course – Princess Beatrice and Princess Eugenie. Photo: Getty Images
This was the first royal garden party that the Duke and Duchess of Cambridge have attended together. While this was William's first official event on the palace's lawns, Kate has been to several, her first was in May 2012.Photo: Getty Images
Garden parties at Buckingham Palace are a tradition that Her Majesty has kept for years. The 90-year-old invites members of the public to her central London residence, usually as a way of thanking them for their services to the community.Photo: Getty Images
All eyes were on Kate as she greeted guests on the luscious palace lawns. The mom-of-two wore the same cream Alexander McQueen outfit that she famously wore at Prince George's christening back in 2013.Photo: Getty Images
The Duchess accessorized her outfit with the same Jane Taylor hat she wore at her son's baptism, but chose to have her hair swept up into an elegant chignon for Tuesday's spring event.Photo: Getty Images
The Queen, who was hosting the party, was resplendent in a bright blue Stewart Parvin outfit, paired with a hat by Rachel Trevor-Morgan.Photo: Getty Images
Princess Beatrice looked lovely at the official engagement wearing a black and white print dress and a matching monochrome fascinator.Photo: Getty Images
Her sister Princess Eugenie looked equally as chic, wearing an eye-catching white skirt featuring an artistic design. Queen Elizabeth's granddaughter happily chatted with guests at the outdoor event.Photo: Getty Images
Prince William looked dapper wearing his morning suit and top hat for the party. This was the second engagement in two days for the Prince, who on Monday attended the Royal Chelsea Flower Show alongside his wife.Photo: Getty Images
William and Kate were pictured talking to some of the VIP attendees as they made the traditional tour of the lanes – paths that are manned by staff that the different royals walk down.Photo: Getty Images
An impressive 27,000 cups of tea, 20,000 sandwiches and 20,000 slices of cake are consumed at each and every party, with a special tea blend called the "Buckingham Palace Garden Party Tea" prepared.Photo: Getty Images
The royals traditionally speak to guests in the grounds before heading into the tea tent where they are joined by a select number of VIPs and dignitaries. 94-year-old Prince Philip, who has been attending these garden parties for many years, appeared in good spirits as he stopped to chat with guests.Photo: Getty Images
As part of the pomp and circumstance Yeoman Warders of Her Majesty’s Royal Palace, popularly known as Beefeaters, formally paraded past the guests during the day.Photo: Getty Images
Queen Elizabeth hosts at least three garden parties at Buckingham Palace each year and one at her Scottish residence Holyrood House. The royals take it in turns to attend the event.Photo: Getty Images