John Stillwell; Press Association

He's on his feet!

The Duke and Duchess of Cambridge, better known as Prince William and Kate Middleton, posted an adorable picture of their son Prince George to show how big he's gotten as he took his first steps!

In the photo from Press Association staff photographer John Stillwell, their cute baby boy showed off his budding motor skills in Petit Bateau denim overalls, a navy polo and Early Days Alex Pre-Walker shoes while at the Natural History Museum on July 2 for an early birthday visit.

His parents plan on throwing him quite the birthday bash on the actual day, with most of the royal and Middleton families expected to attend.