When it comes to Prince Harry's latest charitable endeavour, the motto was go big or go home. The royal welcomed a whopping 3,000 people to Kensington Palace Gardens on Tuesday evening (June 28) for a star-studded charity concert headlined by Coldplay.
The 31-year-old royal took to the stage to introduce the band after performances from stars including soul singer Joss Stone, who sang alongside the Basotho Youth Choir, six boy and six girls helped by Sentebale in Lesotho, who travelled to London especially for the concert.
Speaking before the show, Joss, 29, joked that she would do her best to get Harry dancing, adding: "He's quite shy in that way, but it depends. Last time I was singing in Lesotho he started a conga line, so I wouldn't put it past him. He's a fun human being.
"He's quite sweet and soft though too, I might leave him to it today though, there are too many people here."
The Grammy and Brit Award-winning star said of her royal friend: "I'm very proud of anyone that would do this and he's just a lovely guy. I've come into contact with Harry and William for years now and we as a country we watch them grow and we watch them do lovely things and I thing all of us as a nation should be proud of those boys, those men. They are amazing and they represent who we are, our country, our land."
The choir included Relebohile "Mutsu" Potsane, one of the children who inspired Harry to set up the charity a decade ago.
Mutsu was just four years old when he befriended Harry – then a Gap Year visitor to the tiny African kingdom - at a children's centre in 2004.
Now 16, he and the Prince enjoyed a reunion on Monday when Harry surprised the choir as they rehearsed with soul singer Joss Stone at The Brit School in south London.
The youngsters, aged 7-19, are all helped by Sentebale and were flown to London by Avios Travel Rewards.
They are on their first ever trip outside Lesotho and as well as starring in the concert, they have experienced their first plane, train and boat journeys as well as a sight-seeing tour of London and traditional meals of fish and chips and a Sunday Roast.
Despite heavy rain, the crowd at the open-air gig enjoyed music from singer Laura Mvula, African-Norwegian duo Nico and Vinz, and a performance from spoken word artist George Mpanga.
Ahead of the concert held in the grounds of the home he once shared with his mother Diana, Princess of Wales, Harry announced he would be taking a new direction in his public life and following in her footsteps in the fight against HIV/AIDS.
After the huge success of the Invictus Games in May, he is turning his attention to the cause she championed, attending engagements in the UK to raise awareness of the ongoing battle against the disease and attending the 2016 International AIDS Conference in Durban, South Africa, later this month.
In a statement, Kensington Palace said: "Building on his decade of experience in supporting young people with HIV in Lesotho through his charity Sentebale, the Prince is now determined to help his generation understand that the battle against the disease has not yet been won and still needs fighting.
"He hopes to convene leading figures in this sector and support their vital work in ensuring that everyone – and young people in particular - get the help they deserve to lead healthy and successful lives."
The statement added: "His Royal Highness wants to expand his own knowledge of the challenges and opportunities in the fight against the virus around the world. This will see him tackling topics including testing, treatment, and prevention as well as anti-stigma efforts that were famously championed by his mother Diana, Princess of Wales.
"Prince Harry believes that greater public awareness of the innovations in both testing and treatment for HIV can help save lives and he wants to do his part."
More people than ever in the UK are living with HIV with thousands more being diagnosed each year.
In Southern Africa, HIV is the biggest killer of 10-19-year-olds. Lesotho has the world's second highest HIV infection rate and of the 21,000 young people living with the disease, only 30 per cent access treatment because of stigma.
Cathy Ferrier, CEO of Sentebale, said: "The world has committed to ending the AIDS epidemic by 2030 but ignorance and misunderstanding continues to undermine those efforts. Stigma, discrimination and lack of education about HIV/AIDS means young people in Africa are increasingly dying when AIDS-related deaths are in decline for all other age groups.
"Together we have an opportunity to end an epidemic that has defined public health for a generation but it won't go away unless we act now. The Sentebale concert is all about bringing people together to make a difference."