Who will watch on as the Greek prince walks down the aisle of the Holy Church of Saint Nicholas Ragavas ... Think King Frederik and Queen Mary of Denmark (then Crown Princes and Princess); King Felipe ...

Here, FEMAIL takes a closer look at the guests who attended the very royal wedding ... Letizia. Queen Anne-Marie is Princess Theodora's mother and the widow of King Constantine II of Greece.

Queen Letizia is the Queen of Spain and of wedding guest style it would appear ... was seen alongside her husband Crown Prince Pavlos of Greece in a beige ruched floor-length gown with statement ...

Prince Nikolaos of Greece is set to marry again. The the son of Queen Anne-Marie and the late ... Vardinogianni reportedly joined Prince Nikolaos at the wedding of his sister, Princess Theodora ...

At the end of the video, King Felipe, Letizia's husband and Sofia's son, approached the two women in what seemed to be an attempt to defuse the situation. RELATED: Queen Anne-Marie of Greece Wears ...