Prince William holds back tears as he speaks of Kate Middleton, Princess Charlotte

Prince William, who's hosting his fourth annual Earthshot Awards in Cape Town, spoke of his family ahead of the star-studded ceremony on Wednesday.

The Prince of Wales got emotional as he shared the details of his sweet promise to his daughter Princess Charlotte while sharing update on Princess Kate's health.

King Charles III's eldest son William, who appeared wearing a special bracelet given to him by his daughter during his engagements in the country, revealed Sky News: “I made a promise to Charlotte to wear it.”

The royal also revealed a sweet wish for his three children - Prince George, Princess Charlotte and Prince Loius - saying they are "proud" of his Earthshot Prize.

William held back his tears as he broke his silence on Princess Catherine's health during his conversation with a media person, saying: “She is doing really well. She’s doing amazing.”

Paying tribute to his sweet wife, William said she had been 'amazing' during her tough year of cancer treatment.

"She's doing really well thanks. And… hopefully she is watching tonight. So cheering me on. She's been she's been amazing this whole this whole year. I know she will be really keen to see tonight be a success," he said.