The Prince and Princess of Wales flew in to rainy Boston on Wednesday beginning their three day visit to the city for Prince William's Earthshot Prize Awards ceremony, which will take place on Friday.
The royal couple surprised fans at TD Garden as they sat courtside and watched home team Celtics take on the Miami Heat. The two sat next to some of Boston's own royalty - eight time NBA champ and former Celtics player Thomas "Satch" Sanders, the team's owners and their spouses, and Massachusetts governor-elect Maura Healy.
The prince and princess also took selfies with fellow spectators, stood for the national anthem...endured some booing... and cheered on the Celtics.
During halftime, the Celtics honored a "Hero Among Us," a long-standing tradition with the team. 15-year-old climate activist Ollie Perrault was honored for her work to positively impact the community. William and Kate even chatted with the teen during a break.
The couple seemed to be truly enjoying themselves, even staying the entirety of the game when they were slated to leave during the 3rd quarter.
However, one aspect of their merriment took Twitter by storm—the princess' a pause—err... applause.
The Twitterverse was perplexed.
This is not, however, the first time Kate has been called out for her intermittent self-fives.
Remember Wimbledon 2014?
But alas, as many pointed out, the princess was likely exhausted from her extensive travels.
The Celtics outscored the Heat 134-121, and we're sure the royal couple—even if we couldn't tell—were elated.