"He's great. He's so mellow, but he's very alert too," she said in an interview Wednesday night at House of Blues in West Hollywood, California. "It's like he knows what's going on around him. He knows when someone comes in the room or comes out. He's something."
Shakira joined fellow The Voice coaches, Adam Levine, Blake Shelton and Usher, at a red carpet event celebrating the NBC singing competition's top 12 finalists.
The Voice host Carson Daly says baby Milan has been a welcome addition to the kid-friendly set, which features regular visits from Daly's young brood, Usher's children and Levine's nephews.
"With Milan it's a full blown nursery!" explained Daly of Shakira's baby-proofed double-wide trailer. "It's just like Shakira's door opens and It's a Small World starts playing. It's built for Milan. And it's really special and it's cool. We're like a little family."
But according to Shakira, it's not the children who cause the most trouble.
"It's like a kindergarten because these guys are already babies. They're babies!" she joked of her fellow coaches.