Kate Middleton and Prince William have shared a new photo of their youngest son Prince Louis in honor of his 6th birthday Tuesday. The Prince and Princess of Wales took to social media to share a sweet snap of their youngest son on his special day.

In photos obtained by Page Six, Middleton and Prince William were spotted alongside their kids as they skied down as a family in some chic outwear attire. Prince William sported a dark blue jacket with bright red ski pants as he hit the hills with his kids.

Spring may be blooming but ski season isn’t over just yet—and Prince William and Kate Middleton are making the most of it. The Prince and Princess of Wales recently snuck in a secret family ski trip to the French Alps with their three kids and they did it in serious style.