Prince William and Prince Harry are both fathers now, but once upon a time they were little boys growing up with one of the most famous mothers in the world. Princess Diana raised her sons with a strong sense of what it means to give back, and today, Harry and William have carried that tradition on to their children.

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.

Sky News host Caroline Di Russo reflects on the "warmth" of Prince William and Princess Catherine's relationship after the royals shared a Valentine’s Day post on social media.

The Duke of Sussex has revealed his favourite book that he read at Eton and it's one many Brits will know and love.

The Waleses have never shared a Valentine's Day message, that is, up until now. The break in protocol may be the sign of a more modern monarchy.