Kate Middleton once gave Prince Harry this hilarious Christmas present

These two!

Kate Middleton and Prince Harry's relationship has always been a popular conversation topic, with the brother and sister-in-law, reported to be like real siblings.

While the past few years have seen tension between the Cambridges and the Sussexes, Prince Harry and Kate Middleton are still said to have a close relationship, with Prince Harry reported to lean on the Duchess of Cambridge for advice.

The prince even has a special nickname for the Duchess of Cambridge, affectionately calling her 'Cath'.

This week, Prince Harry and Kate Middleton's sweet relationship hit the news again as a sweet anecdote involving the pair resurfaced, but this time it's related to Christmas.

It turns out that the brother and sister-in-law give each other hilarious gifts during the royal festivities, and one of Kate's presents for Harry is particularly savage.

The gift of choice? A Grow Your Own Girlfriend.

Yes, this is not a drill. Kate Middleton gave Prince Harry a Grow Your Own Girlfriend - something he definitely doesn't need anymore!

Giving joke presents is a royal Christmas tradition, something the family reportedly does at 6pm on Christmas day.

It's not known which year Kate gave her brother-in-law the gift but it was obviously before Meghan came onto the scene.

This is hilarious. But what will Kate give Harry this year?