Sue Radford, who has 22 children and is mum to Britain’s biggest family, posted an adorable “three generations” snap on Instagram.

The mum gave birth to her youngest child, Heidi, in April.

Sue, 45, and her husband, Noel Radford, 49, had their first child when Sue was 14 years old – and they’ve been adding to the brood ever since.

However, they’re not the only members of the family with little ones.

Sue’s daughter Millie, 19, gave birth to her first baby, a little girl called Ophelia, yesterday.

Do you have a big family? What is your favourite part of having a big brood? Let us know in the comments...

Sue has Heidi in April and now Millie has added a little one to the family too

Millie was a week past her due date when the family rushed her to hospital to give birth.

The teenager’s unexpected pregnancy means that there are just five months between Ophelia and her aunt, Heidi.

The Radfords are thrilled with the latest addition to the gang and shared heartfelt messages on Instagram.

Millie's sister Sophie replied to the announcement on Instagram with the comment: "I love you so much my beautiful niece. So proud of you Millie."

Brother Luke wrote: "You've never been more ready Mil."

While sister Chloe wrote: "So happy and so bloody proud of you Mil."

But, sweetest of all was a cute snap posted by mum, Sue.

She posed holding tiny Ophelia and five-month-old Heidi in her arms.

The cute snap featured Sue and Heidi and Ophelia who are niece and aunt

Captioning the photo she said: “Love this picture #threegenerations #auntie #neice.”

Fans of the massive family posted messages of support online.

One person said: “You are all amazing – so precious.”

Another suggested: “Sue you should try to get a photo of your hand, Mille's hand, Ophelia and your Mum's, the four generations!”

“Heidi looks so big now, hope Millie is doing well,” added a third.

Sue and Noel are parents to Chris, 31, Sophie, 26, Chloe, 25, Jack, 23, Daniel, 21, Luke, 19, Millie, 19, Katie, 17, James, 16, Ellie, 15, Aimee, 14, Josh, 13, Max, 11, Tillie, 10, Oscar, eight, Casper, seven, Hallie, five, Phoebe, four, Archie, two, Bonnie, one, and Heidi, five months.

They also had a stillborn son, Alfie, in 2014.

Now they are grandparents to Daisy, Apryll and Leo by daughter Sophie, Maisie and Jacob to Christopher and now Ophelia, by Millie.