Now that their adopted daughter Naleigh is already 3-years-old, rising country star Josh Kelley and his wife, actress Katherine Heigl, are getting the itch to expand their family.

"I’d like to adopt again," Heigl reveals in the February issue of Scholastic Parent and Child. "Josh and I started talking about [adopting] before we were even engaged. We have talked about having biological children as well, but we decided to adopt first."

While Heigl admits that the adoption process is a long one, as is the adjustment period at home, she says it was well worth every second as they watch their beautiful little girl grow every single day. "Anyone who doesn’t have experience with adoption wonders, ‘Does love for a child come through DNA?’ I knew it didn’t," notes the actress. "They’re yours. You love them the moment they’re put into your arms. Josh had to learn that, but he was so gracious and accepting."

"[Naleigh] felt really comfortable with Josh and they bonded quickly," Heigl continues. "He’ll get on the floor and roll around and make her laugh. It was harder for me. It was a struggle for me because all I wanted to do was bond with her. But it takes time for a child to trust this new situation and to trust you."

Heigl says Kelley is a "Disneyland Dad" all the way, but Mom has her own specialty that Naleigh is a sucker for: cuddling! "I’m the one she comes to if she’s hurt," reveals Heigl. "And I have a ritual for putting her to bed. She has one blankie that goes over her, one that goes by her face, and one that she holds. It’s our little thing."

Obviously their parenting plan works, because the proof is in Naleigh's sweet smile in every picture the singer posts on his Twitter page. Clearly, he's one proud papa. But with their celebrity status, Heigl stresses that as parents they'll do whatever they can to keep their youngster grounded. "We feel strongly about these things because of the industries we’re in," says Heigl. "We’ll have to work a little bit harder to keep Naleigh grounded and to make sure she understands how blessed she is — how blessed we all are."