The couple are expecting their first child, a son, in January
Peta Murgatroyd Pregnancy Cravings

Courtesy Peta Murgatroyd

The Dancing with the Stars ballroom floor will be seeing some extra blue in January!

Professional dancers Peta Murgatroyd and Maksim Chmerkovskiy, who are expecting their first child, will be welcoming a baby boy this winter, a source close to the couple confirms to PEOPLE.

“Peta and Maks are so excited about the baby,” the source reveals. “They’re prepping and getting ready.”

As for the engaged couple’s wedding date, the DWTS pros are eyeing summer 2017 for their big day.

“They’re going to wait to get married until after the baby comes,” the source adds. “The baby would be part of their wedding!”

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In June, the bride-to-be told PEOPLE of her wedding plans, which her fiancé said will be “about a 500-person” event.

“I’ll have the baby in January and then I’ll still have about six months to prepare for the wedding,” 29-year-old Murgatroyd said.

“The baby will make a wonderful addition to the wedding party,” Chmerkovskiy, 35, said of their little bundle of joy. “A wonderful, tiny addition.”

Murgatroyd had previously hinted that she was expecting a son when she posted a photo from Chmerkovskiy’s birthday bash — featuring a cake decorated with blue baby shoes.

— Natalie Stone with reporting by Aili Nahas