"We knew we had a big baby, but not that big," said Michelle Cessna, mother of newborn Addyson Gale, likely the biggest baby ever to be born at Armstrong County Memorial Hospital near Pittsburgh, Pa.
Cessna spoke with local CBS outlet KDKA after recently giving birth to a 13 pound, 12 ounce, 25-inch-long girl. The hospital, located in Kittanning, about 30 miles northeast of Pittsburgh, said it does not keep records on massive baby births, but the two doctors involved in the baby's delivery told CBS that they have never delivered a baby that weighed so much.
The parents, who's other two children were larger babies, said they anticipated their third to also be large, but did not imagine she would tip the scales at nearly 14 pounds.
"I was guessing about 10 pounds, I wasn't expecting this," the girl's father Mark Cessna said after the birth.
Doctors Yannie Narcisse and Amy Turner delivered the baby via Caesarian section, though they expressed sympathy towards the mother and the discomfort involved in having such a big baby.
"I think as mothers, we all have that initial, 'Oh my, that must have hurt,' and they're right. That's big." Dr. Narcisse said.
Both the mother and the baby are reportedly doing well.
When a baby is born weighing more than 8 pounds, 13 ounces, it is considered a case of fetal macrosomia, which can be attributed with maternal obesity and diabetes, among other things.
Mary Helen Black, a biostatistician with Kaiser Permanente Southern California's department of research and evaluation, told Huffington Post last year that babies that are born too large face the risk "for very serious consequences both during delivery, for the mother and the infant, as well as later in life -- for the infant."
In March, the delivery of a 15 pound, 7 ounce baby boy was delivered in the United Kingdom. At two times the size of an average baby, the event was declared the second largest vaginal birth on record in the U.K.
The largest baby ever born reportedly weighed 23 pounds 12 ounces, but died shortly after birth.