In their first international trip since becoming Prince and Princess of Wales, William and Catherine will visit the US this week for an environmental prize.
The awards were launched by Prince William last year and the three-day trip to Boston will be his first big international appearance since becoming Prince of Wales.
As well as the prize ceremony on Friday, Prince William and Catherine will be on show in front of the US public, which in recent months will have seen much coverage of the Royal Family, ranging from the Queen's funeral to the Netflix drama The Crown, to stories about Prince Harry and Meghan.
Prince William has said the Earth is at a "tipping point" and the awards are intended to support innovative ways of reducing environmental damage.
Another royal couple, Prince Harry and Meghan, the Duke and Duchess of Sussex, are also involved in a US prize related to the Kennedys.
But in terms of whether the couples will meet in the US, the Prince and Princess of Wales are said to be firmly focused on their own awards this week.
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