And in case you have any doubt that this was a plan and not a coincidence, note that Mathilde made an outfit switch just for her jaunt with Máx.
Earlier that day, she was sporting the same hat but with a repeated blue floral Dries Van Noten dress for a pit stop at the residence of the Belgian ambassador in The Hague. Definitely a color scheme designed for an easy flip into twin mode. Also, this:Exposition 'Art et Culture à la Maison', Résidence de l'Ambassade de Belgique #DenHaag pic.twitter.com/kwoVvCQeVD— Belgian Royal Palace (@MonarchieBe) May 20, 2015
A joint appearance in 2007Classic. Oh, you two.
Photos: via Getty Images and Twitter as indicated