"We work on it often," Rimes, 31, said with a laugh. Cibrian quipped, "But nothing's popped out!"
"I know, sorry," the country singer joked back. "I think about it often," she added. "We talk about it."
"Is it something you want?" Lopez, a father of two, asked.
"Yeah, I think so," Rimes said. "Right now, I'm actually ending a record deal that I've been in since I was 11, so 20 years at the same label. That ends next month, so, yeah, it's exciting. I'm trying to lay out the land and figure it all out for the next 10, 20 years of my life."
"What are you saying, you want to commemorate that with a baby?" Cibrian, 40, questioned his wife of two years. "Is that what you're saying?"
"No! I don't want to have one until I have that figured out," the "Spitfire" singer explained. "One step at a time. It's like starting my life all over again. That's kind of, like, my original baby."
But Cibrian revealed to Lopez, "She wants a little girl, badly."
The Best Man Holiday actor is already father to sons Mason, 9, and Jake, 5, with ex-wife Brandi Glanville. Cibrian and the 40-year-old Real Housewives of Beverly Hills star split in 2009 following Cibrian's infamous affair with Rimes.
Cibrian and Rimes, who are currently shooting their own VH1 reality show, recently faced rumors that they are headed for a $50 million divorce. "It was just so ludicrous," Cibrian said of the report. "It said something to the effect like I would text Brandi all the time whenever LeAnn and I are having a fight or something like that, and you know, that's not true."