(In the above pic Rebecca was snapped leaving a screening of her new series, Eastwick, on May 29th)

Rebecca Romijn and Jerry O’Connell’s twins may only be 5-months-old, but their personalities are starting to show through – especially their sense of humor.

“They’re really developing their own, very specific personas,” Rebecca told People magazine at the Dior Beauty Luncheon Wednesday at the Shangri-La Hotel in Santa Monica. “They’re starting to think that things are hilarious, like they’re noticing the dogs as being anything other than furniture. The dogs were play-fighting the other day and they thought that was hysterical.”

Rebecca’s three dogs – Taco, Better, and Bim – aren’t the only things the girls, Dolly Rebecca Rose and Charlie Tamara Tulip, giggle at. The parents’ bowling skills are apparently laughable as well.

“Jerry and I went bowling last weekend and we put them in their infant seats right in the front so that they could watch us, and they thought it was hilarious,” she said. “It probably was. They were laughing at my score. Like, ‘Mommy can’t knock down any! It’s so funny!’ “

The twins, who were born in December, are the first children for Rebecca, 36, and Jery, 34. And Romijn is no stranger to the exhaustion that being a new mom brings.

“Sometimes I’m so tired, I look down at what I’m wearing, and if it’s comfortable enough to sleep in, I don’t even make it into my pajamas,” shared Rebecca. “I’m looking down, and I’m like, ‘T-shirt and stretchy pants? Yup, that’s fine. It’s pajama-y, good night. Sorry, Jerry!’ “

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