The oldest living pair of identical twins in the world celebrated their 103rd birthdays on Christmas Eve.

The twins, Charlotte Eisgrou and Ann Primack, from Florida celebrated their lives and their blessings.

"I feel wonderful," Eisgrou said to The News-Journal Online. "I have no special plans [for my birthday] unless they surprise me. I like to go downstairs. There's always something to do. I make it a point to get it."

The women were born prematurely on Christmas Eve in 1909 and kept warm by their parents wrapping the newborns in blankets and keeping them by an open stove.

The two were unable to celebrate their birthdays together as each had reportedly been hurt in similar falls, but were able to keep up to date on the big day as part of their daily phone calls.

So what was the secret to the twins' remarkably long lives?

"It's the genes," Primack said. "Genes are the whole thing. And we were never fat."

"And it's milk," Eisgrou added. "We drank milk. It's milk and the genes. I don't know the secret to a long life. And I wouldn't tell you if I knew it. I'm more outspoken. My sister, she's the quiet one."

When the news reached the two that they were the oldest living twins, they were surprised.

"I didn't know that," Primack said. "That's wonderful. I can't believe it, that I've reached that age. The good thing is our minds are sharp. That's the only good thing."

The twins both shared similar lives as Primack and Eisgrou were both married once and each had a son.

The two even used to play jokes such as switching husbands when they went out in public.

"Nobody ever knew the difference. And by the time they found out, they were hysterical," Eisgrou said, as reported by The Huffington Post. "We had so much fun."