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.

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.