The Duke of Cambridge has said it would be "absolutely fine by me" if in the future his children came out as gay or lesbian.
Prince William, 37, was asked how he would react if his children Prince George, Princess Charlotte and Prince Louis identified as LGBT.
He responded: "I think you really don't start thinking about that until you are a parent and I think - obviously, absolutely fine by me."
William's candid admission came when he visited the London headquarters of the Albert Kennedy Trust (AKT), an LGBT charity dedicated to helping young people made homeless because of their sexual orientation.
The father-of-three went on to say: "The one thing I'd be worried about is how they - particularly the roles my children fill - is how that is going to be interpreted and seen.”
William also spoke of how “appalled” he was by the recent attack on a lesbian couple on a London bus.
Melania Geymonat, 28, and her girlfriend Chris were left bloodied and in shock after the homophobic attack by four thugs, which happened around 2.30am on May 30.
Ahead of the Pride in London parade on July 6, William opened AKT’s new services centre in Hoxton, which will host drop-in sessions for young people and grow its youth engagement offering.
The Duke is a longstanding supporter of organisations working to combat homelessness, and is patron of Centrepoint and The Passage.
William became the first member of the Royal Family to be photographed for the cover of a gay magazine - Attitude - in July 2016.
He told Attitude: “No one should be bullied for their sexuality or any other reason and no one should have to put up with the kind of hate that these young people have endured in their lives.