Kate Middleton and Prince William cross half a million followers on YouTube

15 days after Prince William and Kate Middleton launched their YouTube channel, the royal couple has crosses half a million followers on the video-sharing website.

The Duke and Duchess of Cambridge's first video on YouTube has garnered more than 3 million followers.

The royal couple has been praised for keeping their comments section switched on.

Hundreds of people have shared suggestions for the couple's future videos on the platform.