Kate Middleton, Prince William cross 13m followers on Instagram as Prince George turns 8

The Duke and Duchess of Cambridge, Kate Middleton and Prince William's official Instagram account "Duke and Duchess of Cambridge" has crossed 13 million followers.

A picture of Prince William and Kate’s son, Prince George, has been liked by more than 1.3 million people on Instagram. The royal couple hit 13 million mark as they celebrated the eight birthday of their son Prince George.

The royal couple had posted a picture of young prince on their Instagram account a day before his eighth birthday. It was one of the few posts shared by the royal couple that crossed one million likes on the app.

The duke and duchess follow only 113 people on the Facebook-owned social media app. They have amassed 13 million followers by sharing only 2338 posts on the photo and video sharing application.