Princess Charlotte's new 10th birthday portrait by Kate Middleton was taken by an iPhone, marking a relatable royal first.

The photograph, taken by the Princess of Wales during a visit to Cumbria earlier this year, was published with the caption: "Happy 10th Birthday Princess Charlotte".

Princess Charlotte is growing up quickly —and this modern royal can rock an outdoorsy look just as well as a coronation cape. The Prince and Princess of Wales shared a laid-back portrait in honor of Charlotte's 10th birthday, and the princess is following in both of her parents' footsteps in the joyful snapshot.