The last time we got a glimpse of the young royal family, Prince George was getting into trouble at his Aunt Pippa’s wedding. Because they’re so young, Prince George and his sister, Princess Charlotte, still travel with their parents, the Duke and Duchess of Cambridge, when the royals tour. This week, the Prince and Duchess are visiting Poland and Germany with their kids, and the photos of them arriving in Warsaw are heart-meltingly adorable.

Duchess Kate, Prince William, Prince George, Princess Charlotte

Even before they got off the plane, the royal kiddies were checking out their digs. We were in for a little surprise when the family disembarked from the plane, as George’s classic knee-highs were gone and replaced by a pair of smart ankle socks.

Prince William and Prince George

Even Charlotte got in on the European love with her red and white outfit (as red and white are the national colors of Poland).

The Daily Telegraph reports that their initial arrival caused George a little case of the jitters. The family will stay in Poland through midweek before continuing on to Germany and returning home to the UK on Friday. Prince George will be celebrating his fourth birthday this weekend, which means we’re bound to see more snaps of the prince and princess this week.

What’s your favorite outfit to travel in? Let us know @BritandCo!

(Photos via Arthur Edwards/Pool/Getty and Chris Jackson/Getty)