The couple, who married in October, have a nine-month-old daughter, Lincoln, together but are not planning on waiting to give her a younger brother or sister, reported OK magazine.
"I would love to give her a sibling. I had two older sisters ad I think the relationship between siblings is so special. You're able to share that, 'We're all in this together,' feeling. Because growing up is, like, the worst," Bell said.
"Your body hurts and you can't communicate with anyone, and you think you know stuff before you know it, and your parents are idiots, and they're embarrassing," she added.