Even more rare, the couple learned: Their girls are two sets of identical twins.

“I was laughing and crying at the same time,” Farrah said. “My husband was about to pass out.”

Recently, Farrah, gave birth to four healthy daughters via cesarean section: Lyric, Paisley, Psalm and then Fallyn.

Naming Baby A, B, C and D, as they were all called in the womb, was fun, the couple says: They put names on slips of paper in a bag, and as the girls were born, Peyton randomly drew a name for each.

“As the baby came out, he would pull out the name and say, ‘Alright, this is Lyric…,’ ” says Farrah.

After a few weeks in the neonatal intensive care unit, the so-called quad squad, who each weighed about 4 lbs. at birth, are now all home in Slidell, La., joining their lively 2-year-old brother, PJ.

“I’m sleeping maybe three and a half hours a night,” says Farrah. Her husband has learned to function without shuteye, too.

“I don’t sleep anymore,” says Peyton, also 29. “It’s like one long blink.”

Still, the couple, who met during college and have been married for five years, say they’re thrilled to expand their family — even if it means the diapers, bottles and feedings all multiply quickly. (Farrah is nursing all four girls.)

“For diapers, we’re going through seven or eight a day, times four. We’re going through packs quickly,” Farrah says. “It’s the same for bottles; they eat like eight times a day.”

Lyric and Fallyn are twins, as are Paisley and Psalm. Quadruplets born without fertility drugs are rare, but the odds are even slimmer that they’ll be sets of identical twins.

“It’s … quite a feat for the parents,” says Dr. Jane Chueh, a professor and director of prenatal diagnosis in the Division of Maternal Fetal Medicine and Obstetrics at Stanford Children’s Health. “[The chances are] somewhere between one in 750,000 to one in a million.”

Farrah says that while she can tell her daughters apart, the rest of the family struggles.

“My mom says ‘I’m gonna mark their toes...read more