William and Kate shared the photo on their joint Instagram account, @princeandprincessofwales. On her own newly-launched Instagram account, Meghan, the Duchess of Sussex, shared a photo Friday of herself kissing Prince Harry along with a Valentine's Day message.

Even though Prince Harry and his wife, Meghan Markle, are no longer senior members of the British royal family, they still abide by most of their rules. Of course, there are exceptions—like Prince Harry’s latest outing when he took a page out of Kate Middleton’s handbook.