Alec Baldwin and his wife Hilaria Thomas are expecting a girl

The '30 Rock' actor and yoga instructor Hilaria Thomas announced last month that they will welcome their first child together later this year and Hilaria has now confirmed the gender.

Speaking on TV show 'Extra', she said: “Alec and I are overjoyed that we are going to be welcoming a little girl into our lives.”

While Alec, 54, is no doubt thrilled with the news, he will now have to work on choosing a new name for the tot after previously picking Massimo if he and Hilaria, 28, had a boy.

She said: "[Alec] had the idea for Massimo the other day. It's a lovely name, I just don't know. That's a very big name for a very little baby.

"We have a different idea almost every single day. I think you actually have to look at it once it pops out and say, 'Who are you? What is your name?'"

While the couple weren't planning on having a baby so soon after their June 2012 wedding, they cannot wait to welcome the latest addition to their family.

Hilaria  - who found out she was expecting at Christmas - added: "It was something that we both wanted - I don't want to say it was a surprise and we didn't want it - we were very excited when we found out.
"But we just got married in June ... so it was a really nice Christmas present."

Alec already has a 17-year-old daughter Ireland from his previous marriage to Kim Basinger.