Hilaria and Alec are already parents to their four children -- 7-year-old Carmen, 5-year-old Rafael, 3-year-old Leonardo and 2-year-old Romeo. Alec is also dad to 24-year-old daughter Ireland, whom he shares with his ex-wife, Kim Basinger.
"Sound up...I'll let the baby do the talking because I don't have the words to express how this sound makes us feel," she wrote. "Just got the great news that all is well and all is healthy with this little munchkin. I wanted to share this with you? Here we go again ?."
In July, she posted a picture of her bare belly, and shared she was almost eight months pregnant.