Rebecca Romjin and Jerry O'Connell

It's a girl and another girl for Rebecca Romijn and Jerry O'Connell.

The couple welcomed fraternal twin daughters named Dolly Rebecca Rose and Charlie Tamara Tulip on Dec. 28, the actress' rep tells Us Weekly.

"Mother, father and both girls are all home and doing well," the rep said.

The births were first announced Monday morning by Howard Stern on his Sirius radio show. Stern, a friend of the new parents, explained the unusual name choices.

"Rebecca likes Dolly Parton, so they named the one after Dolly Parton," Stern said. "And Jerry got to name the other one Charlie, but his brother's name is Charlie — and it's a girl Charlie."

Romijn and O'Connell wed in July 2007. These are their first children.