Edginton said she was actually overdue when she delivered on Monday.
"We actually had a doctor`s appointment today because we were due on Friday," she told ABC`s Philadelphia station WPVI-TV. "We got there and they were like `you have to go to the hospital` and we get a call that Nicole and Rich are on their way, too."
The sisters told WPVI-TV they were born just three minutes apart. Their two daughters may have doubled that time by being born six minutes apart, but these first cousins will still share a birthday.
The couples did not immediately respond to requests for comment from ABC News sent through the hospital.
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