Kate Middleton and Prince William's son sported a slightly different wardrobe Janine Henni is a Royals Staff Writer for PEOPLE Digital, covering modern monarchies and the world's most famous families.

For Prince Louis's seventh birthday, the Prince and Princess of Wales chose to use a professional photographer instead of a picture taken ... Louis a very Happy 7th Birthday!

Bluebells can be seen in the background of the photo. Article continues below ADVERTISEMENT A message accompanying the new picture read: "Wishing Prince Louis a very Happy 7th Birthday!" ...