August 09, 2016 11:40 AM

Peta Murgatroyd‘s baby belly is not the only thing that’s gotten bigger in her pregnancy!

The 30-year-old Dancing with the Stars pro is expecting her first child with fellow dancer Maksim Chmerkovskiy. And she’s learned that her growing baby can lead to growing breasts too!

“Hi boobs,” she wrote Sunday on Instagram — captioning a photo of her cleavage. “My lawd this milk thing is no joke.”

Murgatroyd, who’s due in January, hashtagged the pic “#DoubleDs.”

Source: Peta Murgatroyd/Instagram

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While her pregnancy breasts may be a surprise to her, she still managed to find a way to cover them up in a recent trip out to lunch.

Murgatroyd showed off her look — styled by pal Nicole Volynets Gamer — in an Instagram post on Monday.

She wore a high-cut white crop top — her baby bump on full display — with a red and white stripped skirt and jacket.

“Taking #babychmerkovskiy to lunch and open homes,” she wrote.

The New Zealand-born mom-to-be and Chmerkovskiy, 36, shared their pregnancy news with PEOPLE in June with Murgatroyd saying, “I’m looking forward to nurturing something and just having the baby be the center of our world.”

“I can’t wait to provide this baby with the tools to become a beautiful, kind person,” Chmerkovskiy added. “And they’ll have the best sneaker collection.”

— Dave Quinn

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