Exclusive: At Home with Christina Aguilera and Baby

"I'm head over heels in love," says Christina Aguilera of her new son, Max Liron Bratman, born Jan. 12. "I'm in awe of this little miracle."

At home in Aguilera and husband Jordan Bratman's Mediterranean-style Los Angeles mansion, Max is a "sweet, mellow baby," and not a big crier, says Mom. When he does get fussy, Aguilera sings softly to him.

Aguilera's favorite piece in the nursery is an 11-ft.-tall moon from her Back to Basics tour. "It was Jordan's idea," she says, to include it among the Paddington Bear doll and Nintendo figurines.

"The instant I heard his cry, the waterworks started," Aguilera says of the birth via scheduled C-section. When they placed Max in her arms, "I said, 'Hi, Papa, hi, my little angel'."

"Jordan is amazing – he's a natural caretaker," says the singer. "He's so chill with the baby. I love the way we work as a team. I'm so happy to be going through this experience with him."

"We keep it mellow," says Bratman, with Aguilera, Max and pooches Scratchy, Stinky and bullmastiff Coco on their Balinese daybed. "We're a pretty stress-free couple, and I think Max can tell."