He's not a regular future king, he's a cool future king.
And cool future kings like to lay low on their 6th birthday, as evidenced by Prince George's very down-to-earth b-day party at Kensington Palace.
According to Hello! magazine, the third in line to the throne threw an after-school soccer-themed party where he (probably) showed off his adorable gap-tooth smile and perfectly coifed dirty-blonde mop. The party took place some time in mid-July, a few days before George's actual birthday on July 22.
Since football (soccer, for us Americans), is George's favorite sport, it should come as no surprise that his big 6th bash would be kick-around-themed. Reportedly, invitees included his entire class (we repeat, George invited his entire class...how diplomatic of you, Your Highness!) from St. Thomas's Batttersea, the £18,000/year London prep school he attends, and where Charlotte will join him this fall.