On Tuesday, Harry and Sir Elton John will share a platform as the celebrity - who performed at the duke's recent wedding - launches the MenStar Coalition, a global Aids organisation aimed at targeting HIV infections in men.
The conference was officially opened by Princess Mabel van Oranje, the International AIDS Conference Chair, Linda-Gail Bekker, the UNAIDS Executive Director, Michel Sidibé, the Director-General of the World Health Organisation, Tedros Adhanom Gebreheyesus, and artist and victor of the Eurovision Song Contest in 2014, Conchita Wurst.
The first project on the coalition's list will be to encourage Kenyan youth to undergo HIV self-testing in a campaign dubbed "Chukua Selfie".
Prince Harry addressed the group praising the singer and friend. With time and the delivery of mobile clinics to all the 47 counties, this mandate has expanded to cover a wider spectrum of health services.
He becomes the first Kenyan to receive the Elizabeth Taylor Human Rights Award which has since 2012 been awarded to three other HIV/AIDS human rights advocates, Iranian physicians, Arash and Kamiar (2012), Ugandan HIV/AIDS physician Paul Semugoma (2014) and Zimbabwean human rights advocate Martha Tholanah.
Mark Dybul, diplomat and former executive director of the Global Fund for Fight AIDS, warned the world could be steering for "a crisis of epic proportions".
Princess Mabel Van Oranje of Netherlands explained that Kenya would be ideal because of what she termed the country's practical approach to health issues.
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Women and girls must have the knowledge and power to protect themselves against HIV in safe and enabling environments and must be able to access services that meet their needs.
Mrs Kenyatta held separate talks with UK's Prince Harry and rock star, Sir Elton John.
Sir Elton was particularly interested on details about the initiative especially its success milestones. Between 2013 and the end of 2016, there was a 43% decrease in new HIV diagnoses in the city, a decline that is being attributed to both quicker achievement of viral suppression among people who test HIV-positive and to increased uptake of PrEP.
Sharing the stage with Sir Elton John, Prince Harry could not thank him enough for helping millions of AIDS victims in sub-Saharan Africa, one of HIV's hotbeds.
John told CNN that that the marriage of Prince Harry and Meghan Markle was a "wonderful" occasion that also represented a cultural shift.
The AIDS epidemic risks resurging and spiralling out of control despite fierce efforts to defeat the deadly disease, experts fear.
In Harry's commitment to fighting AIDS and HIV is the shadow of Diana and her own advocacy.