It's going to be a happy, happy New Year for Alec Baldwin and his wife Hilaria Baldwin! In a sweet Instagram post on Thursday (Jan. 1), Hilaria revealed that she's expecting her second child. In the photo, the yoga instructor flaunted her tiny baby bump as Alec held up their 16-month-old daughter Carmen as she touched her mom's tummy.     

"The sun has set on 2014 and on my year of daily #hilariaypd... 2015 is going to be very exciting as we are thrilled to announce we are expecting another little addition to our family! (tadasana) #yogapostureoftheday," Hilaria captioned the photo.

This will be baby number two for Hilaria and Alec, who married in June 2012, and the third for the "30 Rock" star. Alec is also dad to 19-year-old Ireland with ex-wife Kim Basinger.

Hilaria has always been vocal about living a healthy lifestyle and dished about staying fit while pregnant to E! Online last year.

"We're going to talk a lot about fitness and nutrition and wellness," she said at the Big City Moms 16th annual baby shower. "We'll talk about cravings and what to do about them, because the most important thing is the health of the baby."

"What we put into our bodies is making our baby right now," she added. "So, if we're putting a lot of doughnuts in, the baby isn't eating very good things."

Back in September, Hilaria announced on social media that her daughter reached her first big milestone: walking. She posted a video on her Instagram of baby Carmen taking her first steps with the caption, "Ladies and gentlemen... It's official... Carmen can walk!!! (Now I'm really in trouble)."

She also shared a video of her trying to teach the little girl how to say "shoe" in English and Spanish.