"They're exactly the same age," O'Connell notes in the December/January issue of Scholastic Parent & Child. "My wife and I had met some twins before ours were born and one would always say, 'I'm the older one.' And that twin would have a kind of seniority over the other."

By peoplestaff225
Updated December 09, 2010 03:00 PM
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Although nearly every twin is able to identify themselves as either older or younger than their former womb-mate, Rebecca Romijn and Jerry O’Connell‘s daughters Dolly Rebecca Rose and Charlie Tamara Tulip, 2 this month, can’t — and they have their famous parents to thank.

“They’re exactly the same age,” O’Connell notes in the December/January issue of Scholastic Parent & Child. “My wife and I had met some twins before ours were born and one would always say, ‘I’m the older one.’ And that twin would have a kind of seniority over the other.”

The couple “didn’t like that,” says the Defenders star, 36, and because Dolly and Charlie were delivered via c-section, O’Connell and Romijn, 38, took matters into their own hands.

“We asked the doctor, ‘Can we say they were born at the same time?'” O’Connell recalls. “And he said, ‘Well, they were.'”

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While the girls may share a birth date and time, it’s one of few things they have in common. “One is outgoing and one is shy,” according to O’Connell, with Romijn adding, “one is a little wilder and more of a daredevil, and the other is more careful.”

Like their delivery room request, however, the couple have left little to chance.

“We had this rule that we were going to treat them differently and dress them differently,” O’Connell explains.

Some rules are of course destined to be broken, however, and O’Connell admits he will often dress the girls in identical outfits. “I just can’t help myself,” he says.

As for their physical differences, O’Connell singles out size — but is quick to clarify his response.

“Charlie is bigger, but I have to be careful saying that,” he says. “I don’t want that to be an issue for either of my girls.”

Having grown up in a household where “no one stressed anything about size,” O’Connell credits his own dad with instilling in him the mindset that “height is measured from the neck up.”

“But a lot of parents see Charlie and ask what percentile she’s in,” he reveals. “That’s always the big question.”

Romijn and O’Connell shared the below super cute personal snapshots with Parent & Child:

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