Hilaria used her daily yoga pose of the day – the sporty brunette set herself a challenge of posting a picture of a pose every day of 2014 – to share the couple’s pregnancy joy.
The picture, taken on a beach with the backdrop of a glorious sunset, put the focus firmly on her growing baby bump, with Alec crouching down on the sand and lifting Carmen up so she could give her mum’s tum a rub.
Hilaria captioned the image: "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"
The happy announcement may not come as a total surprise to fans – since the couple recently hinted that a new addition to the family could be on the cards.
“My wife definitely thinks we should have one more baby," Alec told Closer in November. "We'll see what happens! It could be exciting."
Hilaria added: "As soon as [Carmen] came out, I turned to Alec and said, 'I want another baby'."
The couple wed in New York in 2012 after a whirlwind romance and their daughter Carmen arrived in August 2013.
Hilaria describes Alec as her "soulmate". She told HELLO!: "I fell in love with him very quickly and very easily. He's very romantic. We can spend all day taking and we never get bored. With us, everything is very simple. Our wedding rings are engraved: 'We’re a great team'. In the end, that's what it's all about."