Hilary Duff‘s baby isn’t due until March, but she’s already immersed in baby preparations.

“We have names picked out,” says the star, who’s expecting a boy with hockey player hubby Mike Comrie. “But we’re not going to say.”

Hilary did dish about her nursery, gushing about its eco-friendly bed and “amazing” animal wallpaper.

And she’s treating her bundle of joy to in-utero singing. “I’ve been taking vocal lessons so he hears me sing,” she laughs. “But it’s warmups, so I don’t know if he likes it!”