Remember those cute photos the royal family released in honor of Prince "I Love Squirrels" Charles' 70th birthday? You might recall that in at least one of the pics, the entire fam—including Charles, Meghan Markle, Kate Middleton, Prince William, Prince Harry, Camilla Parker Bowles, and the grandkids—were in a fit of giggles at something off-camera. And now we know what that something was.
According to an Us Weekly source, the royal nanny (also known as Nanny Maria) was standing next to photographer Chris Jackson, "making silly faces and waving to get their attention." Per Us, "everyone burst into laughter at one point, making for a more relaxed photo."
Also, in case you're wondering, the photo session took just 15 minutes and Prince Louis was reportedly "so well behaved" due to being "the most adorable, placid little boy you will ever meet!"
Cool, most of us will never meet him or any member of the royal family but way to rub it in, anonymous source!
This article originally appeared on Cosmopolitan.com. Minor edits have been made by the Cosmo.ph editors.