Babies

Rebecca Romijn & Jerry O'Connell Are Expecting Twins

07/28/2008 at 10:30 AM EDT

Rebecca Romijn and her husband, Jerry O'Connell, are expecting twins, their rep confirms to PEOPLE.

The babies are due this winter. A source tells PEOPLE that both babies will be girls. The twins were conceived without the help of in vitro fertilization or the fertility drug Clomid, a source close to the couple also says.

The parents-to-be were married July 15, 2007, in an intimate ceremony in Los Angeles. He had proposed to her during a September 2005 trip to New York, a full year after they were first spotted together in L.A., taking in an Al Green concert and checking out a local deli.

Ugly Betty's Romijn, 35, recently told Self magazine she hoped to be "lucky enough" to have kids.

And just a little more than a week ago, O'Connell, 34, told PEOPLE, "We're trying to get pregnant."

"It would be amazing if it happened," he said, adding that practicing has been "a lot of fun."

RELATED GALLERIES
• From Jennifer Lopez to Julia Roberts (and even Brad and Angelina!), everyone in Hollywood is doing it: having twins. See more celebrity baby duos on the covers of PEOPLE
• Expecting and excited, these celebrities share their baby joy on the covers of PEOPLE