Shortly after the event concluded, beautiful images from the day were shared on the @sussexroyal Instagram page.
"The Duke and Duchess of Sussex attended their first official Garden Party as a couple last May at Buckingham Palace just days after their wedding," the caption read.
It continued: "Today, the Duke of Sussex met with several guests including those that he and The Duchess extended a personal invitation to based on their extensive work in the community.
Garden Parties have been a royal tradition since the 1860s during Queen Victoria's reign and around 8,000 people attended today's event.
WATCH: The Queen chatting with guests at Buckingham Palace garden party