Newlywed actor Jerry O'Connell is a nervous wreck on the set of Carpoolers - because he has to remove his wedding ring everyday and worries he'll lose it.

O'Connell, who married Ugly Betty star Rebecca Romijn in July, is so determined to keep track of his ring, he pins it to his underwear.

He tells website People.com, "I get very nervous when I have to take my wedding ring off. But I have to everyday at work, so I safety pin it to my underwear so I'll never forget it."