It was hardly the prince's most regal of moments.
As Prince Harry attempted to impress his American hosts, he fell off his horse during a polo match in New York.
Playing at the third annual Veuve Clicquot Polo Classic on Governors Island yesterday - where tables were going for up to £33,000 - Harry took a rather nasty tumble and almost did a somersault as he landed on the grass.
He was pitted against the equestrian game's top star - Argentinian polo player Nacho Figueras - to raise money for AIDS orphans in impoverished African nations.
Happy couple: A radiant Princess Beatrice and her boyfriend Dave Clark pose for pictures at a reception for Prince Harry's charity Sentebale at Greenwich Country Club in New York
The delighted crowd looked on, first in horror then amusement, when they realised the prince was OK - it seemed to only be his pride that hurt.
Walking away uninjured after he took the tumble, the Prince hung his head in shame, obviously embarrassed at the fall.
The 25 year old is in the American capital for a series of events aimed at forging closer links between the UK and US armed forces charities.
Billed as one of the summer's most fashionable summer parties, the champagne is always free flowing.
Despite the fall, Harry was able to lead his players in a hard-fought match that ended 5-5.
But like England's disappointing result in the World Cup, his side lost by an extra time 'sudden death' goal.
The polo match capped Harry's three-day visit to New York.
On Saturday, he threw the first pitch at a New York Mets baseball game and on Friday he visited the West Point Military academy where he said Britain could 'learn a lot' from how the Americans treat their veterans.
Before the polo match he said: 'The United States has always protected the downtrodden, the poorest, those most in need of help in the world.
'And to me, this is what the United States stands for.'
The charity polo match is another part of Harry's extensive charity work - he has pledged to continue his late mother's legacy of helping children born with HIV.