The Duke of Sussex will make his first public appearance today following the birth of his daughter Lilibet.
Prince Harry, 36, will be playing in Aspen, Colorado in the Sentebale ISPS Handa Polo Cup with Argentine polo player and charity ambassador Nacho Figueras.
The match will raise funds for the charity's work supporting vulnerable children in Southern Africa who are impacted by extreme poverty, inequality and the HIV/AIDS epidemic.
He will be donating £1.1million from the proceeds of his upcoming memoirs to the charity he co-founded.
Harry's memoirs are set to come out next year, which he has written "not as the prince I was born but as the man, I have become".

It is his first public appearance since Meghan Markle gave birth to their second child Lilibet in June.
Harry's pal Omid Scobie announced this upcoming appearance on Twitter saying: "Prince Harry is back on the field."
It comes after Scobie said the couple were going to enter a new "era of visibility" this autumn.
He also made a brief appearance a few weeks ago juggling in the background of a video released by Meghan celebrate her 40th birthday alongside Hollywood actress Melissa McCarthy.
Harry set up Sentebale, in memory of his mother Diana in Lesotho in 2006.
The Duke said in a statement on the charity's website: "The Sentebale Polo Cup is critical to securing the funds needed to advance this important mission, and I'm thrilled to be able to support Sentebale, both in person and financially through a separate charitable donation to meet this immediate need.
"This is one of several donations I plan to make to charitable organisations and I'm grateful to be able to give back in this way for the children and communities who gravely need it."
Prince Harry will play on the Sentebale Team against the Royal Salute and US Polo Assn teams in a round-robin tournament.
There will be reduced numbers this year due to Covid, but the charity said that supporting their mission is critical.
The charity said in a statement: "Because last year's Polo Cup was postponed and this year's was significantly and rightfully reduced in size and scope, the organisation is in need of further support to continue its mission.

"To help meet this need, the duke is donating his time as well as honouring his personal commitment to donate a portion of his proceeds from his upcoming memoir by generously committing 1.5 million dollars to Sentebale.
"Sentebale is grateful for his personal contribution, which will allow the organisation to continue operating at full scale and continue providing critical services to at-risk youth in southern Africa."