Kate Middleton has been keeping a low profile amid her cancer battle this year, but one royal event that's definitely penned into the royal's diary is her annual Christmas carol concert.
The festive event—which is confirmed to take place on Dec. 6 at Westminster Abbey—has been a highlight on the royal calendar each holiday season since its inception in 2021. The inaugural event stood out for many reasons, with one of them being a huge surprise that the Princess of Wales treated the crowd (and the rest of the world) to during the concert.
