See What Extremely Rare, Nearly 14-Pound Newborn Looks Like

Doctors underestimated her birth weight by almost 6 pounds.

— -- A Colorado family welcomed a larger-than-expected bundle of joy when their newborn daughter was born weighing almost 14 pounds.

Mia Yasmin Hernandez tipped the scales at 13 pounds, 13 ounces after her delivery Monday at San Luis Valley Hospital in Alamosa, Colorado. The newborn’s father, Francisco Garcia, said doctors had estimated the baby would weigh 8 pounds at birth.

Mia didn't seem especially large when she was born, Gracia said.

“She was swollen and everything” after delivery, he said. “I thought she was going to [weigh] 10 or 11 pounds.”

But after weighing Mia, the nurse told Garcia the infant’s weight.

“I was like, ‘Whoa, she’s the biggest baby I’ve ever seen,’” Garcia told ABC News.

Even hospital personnel agreed. Garcia said the nurse told hi she’d never seen “a baby that big.”

While Mia’s delivery via Caesarean section went smoothly, the infant developed breathing problems and was eventually moved to Children’s Hospital of Colorado in Aurora, Colorado, according to Garcia.

Garcia said Mia is on oxygen and doing well, although they’re not sure when she will get home.

Garcia said the couple has another four daughters at home, which might come in handy for new baby clothes.

“We bought her a lot of stuff like a newborn cap and pampers,” Garcia said. “They don't fit her. She’s too big.”