The Duke and Duchess of Sussex's first royal event as a married couple has seen Harry pay a moving tribute to the Prince of Wales for his charitable work over more than four decades.
In Charles' 70th year the duke described how his father's tireless efforts championing causes such as heritage and vulnerable young people had inspired him and his brother, the Duke of Cambridge.
Speaking in Buckingham Palace's garden, he added that the prince had also influenced many of the 6500 guests, on the lawns of the Queen's official home, representing 386 of the prince's patronages, and 18 of his military affiliations.
During the speech a bee buzzed close to the duke and he fluffed his lines and quipped "that bee really got me".
Meghan and the Duchess of Cornwall broke into a fit of giggles as Harry tried to keep his composure.
Meghan looked impressive in a chic dress by Goat and hat by Philip Treacy. Harry was dapper in a morning suit and held his silk top hat in his hands as he greeted some of the guests invited to the event, which also marked Charles's association with military regiments and units.
Harry began his speech by remembering those "affected by the tragic events at the Manchester Arena a year ago". The first anniversary of the bombing was marked by a memorial service earlier on Tuesday at Manchester Cathedral.
The duke affectionately referred to Charles as "Pa" in his speech and poked fun at his famous "spider handwriting" notes given to royal aides and charity executives, setting out ideas on an issue.
Guests at the garden party ranged from representatives from Age UK, the British Film Institute and the Gurkha Welfare Trust to the Parachute Regimental Association, the Royal Ballet and the Royal Canadian Dragoons - all with a close association with Charles.
Harry ended his speech by saying to his father: "You have inspired William and I, and looking out here today, it is clear to see that we are not alone.
"You have created an incredible body of work that has and will continue to make such a huge difference to so many people's lives both here and around the world."