November 11, 2011 is a big day for mathematicians, historians, numerologists, and the like. Celebrities? Not so much. Aside from Rebecca Romijn and Jerry O'Connell, that is.

"If we happen to look at our phone and it's 11:11, one of us always texts the other," says O'Connell. The significance of the numbers for the Romijn-O'Connell clan comes from their numerical symmetry: "There's two of us – Rebecca and I – and the two of our kids," explains the actor, 37. So the couple decided that Friday, 11/11/11 was a day worthy of celebration.

Rebecca Romijn: My Husband Is Just Like the Dog

After being married for nearly four years, Rebecca Romijn knows a few things about her husband, Jerry O'Connell. One thing she can say for certain? O'Connell is just like the family dog, Binn.

"I always say that Binn and Jerry are the male versions of each other," Romijn told PEOPLEPets.com at the Wella Professionals Care and Styling Launch at Pipino 57 in New York on Tuesday.

The actress explained that what seemed like a jab to her husband is actually a compliment.

Rebecca Romijn and husband Jerry O’Connell welcomed two healthy daughters — Dolly Rebecca Rose and Charlie Tamara Tulip — on Sunday (December 28, 2008). The proud parents and twin girls all celebrated the New Year together!

“Mother, father and both girls are all home and doing well,” a rep for the couple confirmed. These are the first children for both Rebecca, 36, and Jerry, 34. The couple named their daughter after Rebecca’s favorite singer, country crooner Dolly Parton.

Their first wedding anniversary was Monday, but Jerry O'Connell and Rebecca Romijn had to spend it on opposite coasts.

O'Connell, 34, spent the day in Los Angeles at the Television Critics Association conference promoting his new Fox sitcom Do Not Disturb, while Romijn, 35, was at work on the third season of Ugly Betty in New York.

The distance hasn't been a strain for the couple, says O'Connell, adding that they keep in touch by texting and emailing photos on their iPhones.