Kidman -- who welcomed Sunday at 41 -- admits she'd like to have more kids. For now, she hosts a weekly 10 AM baby group for parents and babies at the farm she shares with husband Keith Urban just outside Nashville.
"This is my way of having 10 kids," she confesses.
Living on a Tennessee farm and picking and choosing movie roles (her next flick, Nine, hits theaters Dec. 25) is a new lifestyle she relishes.
"There are certain limitations to my career because I'm based here. And that's cool," she says. "Keith has enormous ambitions, which I support. His tours and albums are much bigger than what I'm doing right now."
She continues, "If I was unhappy I wouldn't be able to live on a farm. I'd feel too lonely. But when you're happy I think you can live anywhere."
She and Urban -- who never spend more than four days apart -- have a "very honest, profound marriage, which we both contribute to every day," she says.
"I love being in love. I believe in the power of love, the way it can heal," she says. "The more you keep choosing it -- because there are times when you can choose to be angry at the person or to love him -- the more it nourishes a family."
Her desire to work on her family -- and add to it -- has rubbed off on her "Nine" co-stars Penelope Cruz and Fergie.
"Kate [Hudson] had her son there," Kidman says, "and Penelope and Fergie were like, 'I can't wait to have a baby.'"