We dare you not to smile!

Prince William seemed genuinely delighted as he watched his wife, Kate Middleton, dance with another famous gentleman in London on Monday morning—or perhaps it would be more accurate to call him a gentlebear.

To celebrate the upcoming release of the movie Paddington 2, Kate, William, and Harry made a surprise appearance at London's Paddington Station. On a platform alongside a vintage train, the royals were joined by the fictional bear and his castmates, as well as more than 100 children from various British charities.

The Duchess of Cambridge, who is currently expecting her third child, seemed to be feeling much better as she danced across the crowded platform with the famous bear, twirling and smiling while the crowd looked on. The dancing duo was caught on camera and it's clear to see that fun was had by all. 

It doesn’t get much cuter than that!