A woman got the shock of her life when she came across a birth certificate that led her to believe her mum had been hiding a 'secret brother' from her.

The woman, called Kristin, stumbled across the mysterious document at her mum's house, which named the unknown child Clyde Fabian and even included an ink marking of the baby's footprints.

But after confronting her mum, she discovered the truth.

Her "secret brother" was actually a Cabbage Patch Doll - a popular toy in the 90s which came with their own birth certificates and adoption papers.

Her mum had actually held onto the papers, and the doll, thinking that it could be worth something one day.

It looks so realisitic

Kristin's sister Chloe shared the hilarious blunder on Twitter, where it racked up more than 260,000 likes.

She said: "I may have done a lot of embarrassing things in my life, but my older sister actually once found a cabbage patch kids birth certificate in my moms filing cabinet, started screaming at and accusing our mom of hiding our ‘brother’ Clyde Fabian from us, and she was like 15.

"Why my mom kept the birth certificate? She thought the cabbage patch might be worth something one day bc it was an original.

"Why she kept it with our birth certificates? I don’t know. That’s the part of the story where my mom did an embarrassing thing."

It's a running joke now

Clyde Fabian was dressed in scrubs and a face mask with "Babyland General Hospital" printed on it.

"My mom picked this doll out because my dad is a doctor and she thought it was cute,” Chloe explained.

She explained that she'd been reminded of the hilarious story after Kristan gave birth to a little girl, and their younger sister bought her a babygrow that read 'Clyde Fabian is my uncle'.

Chloe continued: "When my older sister Kristin had her first baby, my hilarious younger sister @catjaddy had this onesie made for our niece.

"At least Kristin has a good sense of humor about the whole snafu."

Another added: "Not embarrassing.

"I still have my daughter’s Cabbage Patch Doll’s birth certificate in the strongbox.

"We also still have her Christmas stocking.

"I hung it up one year recently and everyone asked, 'Who’s Ava?'"

A third said: "I can’t breathe", while one commented: "This just reduced me to tears. I can't even."

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