Two kings and three queens

Now that King Albert has abdicated and Prince (now King) Philippe has taken the oath of office, Belgium has two Kings and three Queens; yes, Albert has abdicated, but in Belgian tradition he retains the title of King, and his spouse, Queen Paola, retains the title of Queen. The third Queen, Fabiola, is the widow of late King Baudouin.

As someone pointed out to me, that makes a full house. Does that make Philippe the King of Spades, or the King of Hearts?

Or perhaps it's neither, and it's the King of Diamonds