Parents of girl with two mums and two dads welcome same-sex couple on Peppa Pig

Popular children's cartoon Peppa Pig has been entertaining little ones for almost 20 years, with millions tuning in to watch the everyday adventures of Peppa, George and their parents Mummy and Daddy Pig.

Yet we all know that the traditional nuclear family of mum, dad and two kids is far from reality these days.

In fact, a recent Independent Family Review by England's Children's Commissioner found that nearly half of UK children now grow up outside that stereotypical set-up.

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That doesn't always translate in the programmes we watch on TV though, particularly those aimed at children. So it was somewhat of a landmark moment when just last week Peppa Pig introduced its first same-sex couple.

An episode saw the character Penny Polar Bear drawing a picture of herself with two female polar bears in dresses. Explaining her sketch to pals including Suzi Sheep and Danny Dog, Penny said: "I’m Penny Polar Bear. I live with my mummy and my other mummy."

Following the airing, several people took to social media to welcome the LGBT characters in the pre-school show. Among those praising the move are married lesbian couple Rhonda and Lisa Morgan-Farrell, mummies to three-year-old Willow.

Theirs is rather a unique set-up in the fact that Willow has two mums and two dads after they conceived with gay couple Carl Austin-Behan, Manchester's former Lord Mayor, and his husband Simon - who they had both known for years.

Rather than going down the surrogacy route, or the mums conceiving via sperm donation, with the help of a home fertilisation kit, the four decided to go ahead as one big family.

"Willow has two homes and spends