The duchess stood by next to Camilla Parker-Bowles, Duchess of Cornwall and Prince Charles as her new husband delivered remarks at the podium in celebration of his father. More than 6,000 people from charities Charles supports are expected to attend.
"Who has not come away from a meeting with my father, their head spinning with a dozen new ideas which he wants to get underway urgently, having met a group of people or read something that has fired his imagination and started the flow of ideas," Prince Harry said of his beloved dad.
"His enthusiasm and energy are truly infectious; it has certainly inspired William and I to get involved in issues we care passionately about and to do whatever we can to make a difference. In fact, many of the issues William and I now work on are subjects we were introduced to by our father growing up. His passion and dedication are remarkable and seeing so many of you here today, I cannot fail but to be in awe of the drive he has had for so many years, to contribute to the enrichment of society both in this country and around the world."
With many eyes on the new husband and wife, cameras captured Markle rub Prince Harry's back as they later exited together and laugh when he joked about being attacked by a bee at the podium. Love was certainly in the air!
The event also falls one year after the Manchester Arena bombing. More than 250 members of the emergency services who were on the scene on the night of the attack joined the royals at the event.
"First, I would like us to take a moment to remember all those affected by the tragic events at the Manchester Arena a year ago," Prince Harry said at the start of his speech. "It is right that we take a moment to recognize the amazing work they do every day and how each member of our Blue Light Services rise to meet the challenge of tragic events such as the attack a year ago. We are also joined by Youth United Cadets. Their organisation also provided triage support to the medical crews on the attack. So, on behalf of my family and everyone here, I would like to say thank you to the Emergency Services and all those who supported the injured and affected...Our thoughts are with those who lost loved ones and those still dealing with the experiences of that night."
The day got off to a somber start as Prince William attended the Manchester Arena National Service of Commemoration at Manchester Cathedral in honor of those killed and injured in the Manchester Arena bombing, which took place at the end of an Ariana Grande concert.
"Thinking of you all today and every day," the songstress tweeted early Tuesday. "I love you with all of me and am sending you all of the light and warmth I have to offer on this challenging day."