Mumbai: Britain's Princess of Wales, Kate, is set to undertake her biggest overseas visit since undergoing cancer treatment when she joins her husband, Prince William, in India for the annual Earthshot Prize awards this week.

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The royal couple, who are travelling to Mumbai for a three-day visit, are scheduled to attend a series of events, including Tuesday's awards ceremony. The visit marks a significant return to overseas engagements for Kate following her treatment in 2024.

Reuters reported, "Kate, Britain's Princess of Wales, will undertake her biggest foreign trip since having treatment for cancer when she joins her husband, Prince William, in India for his annual Earthshot Prize awards this week. Heir-to-the-throne William, 44, and Kate are flying out for a series of events across Mumbai during a three-day visit that includes Tuesday's awards ceremony."

It added, "For Kate, 44, the trip marks her most high-profile overseas visit since she had preventative chemotherapy for an unspecified form of cancer in 2024. While she is now in remission, she says the illness still impacts her life. William, who, like his father King Charles, has made campaigning on the environment one of his biggest causes, founded the Earthshot Prize in 2020 with the aim of finding solutions to climate change. It awards five winners £1 million ($1.3 million) each to scale up their projects."

The Earthshot Prize was established by Prince William in 2020 to support innovative solutions to environmental challenges. Five winners receive £1 million each to expand their projects.