Since their feud became public, royal events that have been attended by both Prince William and Prince Harry have been rare.
However, last June, the warring brothers managed to put their differences aside to honour their late grandmother the Queen during her Platinum Jubilee celebrations - in what was Harry and wife Meghan's first public appearance at a royal event since quitting the monarchy.
Despite coming together at the event, the pair were seated far apart and were not seen chatting or even standing next to each other - but it still made for a tense service, which was also attended by William's wife Kate.
