Princess Charlotte is growing up quickly—and this modern royal can rock an outdoorsy look just as well as a coronation cape.

Birthday girl Princess Isabella was the belle of the ball ... Isabella's beautiful dress was a princess-style ballgown with draped detailing across the bodice, created by Mary's go-to designer ...

Princess Catharina-Amalia of the Netherlands wore a ruby tiara that she loved as a little girl during a state banquet ...