Thomas, who is 26 years younger than Baldwin and expecting her first child with the actor, is already making plans for some serious mother-daughter bonding time in Spanish, reported Us magazine.
"We're having a girl and we definitely want her to speak Spanish. I was on the phone with my nephew, who's seven. He called me... And he asked me, 'Is she going to speak Spanish?' and I said, 'Yes, but you have to help because she's going to grow up here probably so you have to help speak to her in Spanish,'" she said.
"It's a little tricky because my husband doesn't speak Spanish, so that'll be a little tricky in the house. But maybe we will have our own conversation and he'll have to learn. We can talk behind his back. I cannot wait!," she said.
Baldwin, 54, is already father to daughter Ireland, 17, with ex-wife Kim Basinger.