Rebecca Romijn's Twins, 15, Match Mom in Bikinis Alongside Dad Jerry O'Connell in Rare Family Photo

The family of four celebrated the twins' birthday on the beach

Jerry O'Connell and Rebecca Romijn's twins are growing up!

On Saturday, the proud parents shared photos from their beach vacation with teen twin daughters Charlie Tamara Tulip and Dolly Rebecca Rose as the two celebrated their 15th birthday.

"Happy 15th Dolly and Charlie. Please slow down, it’s going too fast...," the couple wrote in a joint Instagram post.

Days later, the family shared a selfie together. "Feliz Año Nuevo from ours to yours," the caption read.

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Related: Jerry O'Connell and Rebecca Romijn's Kids: All About Their Twin Daughters, Charlie and Dolly

In 2022, Romijn revealed that her daughters are becoming Trekkies. Speaking with PEOPLE at the annual Star Trek Day event in Los Angeles, the actress revealed that her two daughters have found their own reason to get into Star Trek.

"They're down with it ever since they found out Paul Wesley is a part of it," Romijn admitted.

"They were like, 'Did you say Paul Wesley? Oh, we're on board. We are 100% on board,' " she continued. "And now I've been indoctrinating a lot of 11-year-old girls."

Romijn went on to share some of the questions she's been fielding from her teen daughters' friends. "All these 11-year-old girls are coming out of the woodwork going, 'Is Paul Wesley a part of your team now?'"

In December 2020, O'Connell opened up to PEOPLE about the time spent with his daughters, specifically during the COVID-19 pandemic. At the time, he detailed that he "will never get this time with them ever again."

"This is it. Very soon, when this is all over and everything's back to normal and kids are back in school all the time, I have a feeling parents are gonna be like, 'Oh, it was kind of nice having my kids at home,'" O'Connell said. "I almost feel like, just because the age that they are, I'm getting a free extra year with them."

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