Prince Harry demonstrated his military humour remains intact with a risqué joke that particularly resonated with a former US Marine battling testicular cancer. During a breakfast meeting at the Invictus Games,

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.

With Meghan Markle flying home to California, Prince Harry is now flying solo at the Invictus Games, and a body language expert has picked up on some telling changes