Kate Middleton brought a photo of her family to an event to 'make her happy'

This is lovely.

The Cambridges are one of the most talked-about families in the world, but while the Duke and Duchess of Cambridge spend the most time in front of the cameras, it’s their children that really steal the limelight.

From Princess Charlotte’s signature sass and Prince George’s strange nickname to the recent (and hilarious) update that Prince Louis is a ‘fast crawler’, these toddlers never fail to make our hearts melt.

It seems like someone who definitely agrees is their mother, Kate Middleton, who never misses an opportunity to talk about her little ones - and for good reason!

This week was no exception as the Duchess took a photo of her family along to an event with her.

While visiting schools this week as part of Children's Mental Health Awareness Month, everyone (including Kate) was reportedly asked to bring something special from home that makes them happy.

Kate’s choice? A personal photograph of her with Prince William and their three children, something she shared and spoke about with the class.

If you thought you may have seen the photo before, you would be right, with it being the same snap used by the Cambridges as their 2018 Christmas card photo.

Well, this is just lovely.