Prince Harry and Meghan Markle attended a service dedicated to Commonwealth Day at Westminster Abbey on Monday, marking their first official appearance with Queen Elizabeth II. While the couple steered clear of their usual PDA this time around, Harry and Meghan were caught sharing an inside joke following Liam Payne's performance of John Mayer's "Waiting on the World to Change." As cameras panned to the royal pair in the audience, Harry looked over at Meghan and raised his eyebrows, which in turn, made Meghan chuckle as she lowered her head.

We're still not sure what Meghan and Harry were reacting to. Did Meghan make a funny joke? Was Harry signalling to someone in the audience? Or, did Harry simply have mixed feelings about Liam's cover? Since we'll probably never know, we'll let you come up with your own conclusions.