Newborn cousins can look forward to plenty of joint birthday parties in the future.
Twin sisters Aimee and Ashlee Nelson, 19, both gave birth to sons on New Year's Eve.
The sisters gave birth just two hours apart at Summa Akron City Hospital in Ohio.
Aimee Nelson gave birth first, at 12:11 p.m., to 7-pound, 2-and-a-half-ounce Donavyn Scott Bratten.
Aiden Lee Alan Dilts, Ashlee's son, was born at 2:03 p.m, weighing 8 pounds, 12 ounces.
The babies' proud grandmother, Marcella Farson, told the Beacon Journal that the same-day births were not planned — the babies had different due dates, a week apart — and that the same doctor delivered both little boys.
"I'm overwhelmed," Farson told ABCNews.com. "It's wonderful. This is the best New Year's that anyone could have ever given me. I think I'm still in shock."
"I am so blessed they both wanted me there," she added. "Someone was looking down on me, allowing enough time on the two of them for me to be able to experience it with both of them. It just makes me well up thinking about it," Farson said.
The new dads, Matthew Bratten, 20, and Cody Dilts, 22, are also doing well, Farson said.
"They've not left the hospital. The dads have been right by their side. I know both of them have stepped up to the plate. They’re all doing wonderful and I’m very proud of all of them."
Aimee and Ashlee and their baby boys were released from the hospital yesterday.