David Walliams has a new dog.

David Walliams and his dogs (c) Instagram

David Walliams and his dogs (c) Instagram

The 'Britain's Got Talent' judge - who has five-year-old son Alfred with ex-wife Lara Stone - revealed on his Instagram account that he's added to his family with a "baby brother" for his beloved border terrier Bert, and in honour of the classic double act from 'Sesame Street', he's named the new pup Ernie.

David shared a photo of himself cuddling both dogs alongside the caption: "Bert has a baby brother. Meet Ernie."

He later shared another picture of just himself and Ernie and declared himself to be "in love" with the pup.

The 47-year-old star also treated fans to a short video of the tiny pooch snoozing while he stroked his new furry friend, with David's hand almost as big as Ernie.

He captioned the clip: "Ernie lying next to me."

While the children's author and his ex-wife keep their son out of the spotlight, David regularly posts pictures of Bert, so is likely to do the same with Ernie.

He recently marked Valentine's Day (14.02.19) with a selfie in which he wore a red shirt while cuddling Bert, alongside the caption: "Happy Valentine's Day. xxx"

Last year, David spent Christmas Day (25.12.18) visiting young patients at The Children's Trust - which helps children with brain injuries - but admitted they were more interested in spending time with Bert than him.

He shared a series of pictures from his visit and wrote: "Me & Bert paid a visit to the brilliant @childrens_trust today. Bert was of course the star attraction.(sic)"

Meanwhile, the 'Midnight Gang' star recently hinted he could be leaving 'Britain's Got Talent' at the end of the next series.

Asked if he'll be back for the 2019 series, he said in December: "Yes. I have one more year, and then my contract is up. [After that?] We shall see."