Louis, George and Charlotte make a cake for Kate Middleton for Mother's Day treat

Kate Middleton and Prince William's children baked her a cake as a heartwarming gift for Mother's Day.

Louis, George and Charlotte created the delicious treat in honour of both Kate and her mum Carole Middleton.

A heartwarming post on the Duke and Duchess of Cambridge's Twitter page showed a picture of what appeared to be a Victoria Sponge next to a snap of Kate holding her mum's hand as a child.

The photograph of the cake, which was adorned in hearts, was also shared on the Kensington Royal Instagram page.

In their social media posts, the couple said: "Celebrating two other special mothers today. Made by George, Charlotte and Louis."

The couple shared this picture of Kate Middleton holding her mum's hand as a child (kensington royal/Twitter)

The delicious looking cake was posted to social media (kensington royal/Twitter)

It comes after the official Royal Family Twitter account posted a picture of the Queen with her mother.

A touching message posted alongside the photograph said: "To all Mums everywhere, we wish you a very special Mother’s Day. #MotheringSunday "

For Mother's Day last year the Duke and Duchess of Cambridge shared a picture of themselves carrying their children on their backs.

They also posted images of Princess Diana with William and Harry, Carole Middleton with Kate and a card from Prince George to his mum.

George's colourful card - an expertly-crafted collage made of card, paint and tissue paper - depicted a yellow vase with three red flowers.