Prince William reportedly felt "uncomfortable" greeting well-wishers at Windsor Castle without his younger brother, Prince Harry.
The Prince of Wales and the Duke of Sussex, with their wives Kate Middleton and Meghan Markle, viewed flowers left for Queen Elizabeth II outside the castle and talked to crowds gathered on the Long Walk on Saturday.
Well-wishers offered their condolences and passed them flowers as the "Fab Four" were reunited publicly for the first time since Harry and Meghan stepped down as senior royals and moved to the US.
