Peta Murgatroyd is pregnant.

Peta Murgatroyd has announced she's pregnant

Peta Murgatroyd has announced she's pregnant

The 37-year-old dancer has taken to Instagram to announce that she's expecting her third baby with Maksim Chmerkovskiy, her husband.

Peta - who already has Shai, six, and Rio, seven months, with Maksim - wrote on the photo-sharing platform: "We Are Having A Baby [celebration emojis]

"Yes we know…we just had a baby… haha! This was very unexpected at (4 months postpartum with Rio) but we are sooooo happy and so ready to be a family of 5 soon! (sic)"

Peta also posted a behind-the-scenes video of her sharing the news with her husband.

The dancer - who dropped a number of hints about her pregnancy during a video call with Maksim - added in her Instagram post: "Surpising @maksimc on this FaceTime with my two friends secretly filming from different angles made it all the more hilarious. It took one hour for me to get the courage to call him [laughing emoji] and when he wasn’t catching on we all couldn’t stop laughing in the kitchen. I had the “I’m so sick story” the pickle and 2 bottles HAHA! Oh Maks

"Big thank you to @bobbie for helping us shake things up and for being a part of this special announcement! After everything we’ve been through with miscarriages and IVF we’re beyond blessed and know we are uber lucky for this miracle to happen to us. We’re just so happy that we can finally tell you guys the good news [tears emoji] (sic)"

Last year, Peta admitted that she loved being a family of four.

Speaking to PEOPLE, she shared: "It's been amazing. I mean, so busy, chaotic at times, but amazing and beautiful. I just love this stage. I mean, it's so precious. It's so delicate and you don't ever get these stages back."