Belgium's King Philippe and Queen Mathilde arrive with their children (L-R) Princess Eleonore, Prince Emmanuel, Prince Gabriel and Crown Princess Elisabeth to attend a religious service (Te Deum) at the Sainte-Gudule cathedral in Brussels

Belgium's King Philippe and Queen Mathilde arrive to attend a religious service (Te Deum) at the Sainte-Gudule cathedral in Brussels July 21, 2014. Belgium celebrates its National Day

Belgium's King Philippe and Queen Mathilde leave a religious service (Te Deum) with their children (L-R) Prince Emmanuel, Princess Eleonore, Prince Gabriel and Crown Princess Elisabeth at the Sainte-Gudule cathedral in Brussels

Belgium's Queen Mathilde (R) greets the crowd after a religious service (Te Deum) at the Sainte-Gudule cathedral in Brussels