June 29, 2016 08:00 AM

Peta Murgatroyd and Maksim Chmerkovskiy are dancing as a trio these days.

The professional dancers, who got engaged in December, are expecting their first child, PEOPLE can confirm exclusively.

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

Murgatroyd, 29, and Chmerkovskiy, 36, learned they were expecting just a few weeks into season 22 of Dancing with the Stars.

“I was so sick,” Murgatroyd says of her first months of pregnancy, which she spent competing — and eventually winning — alongside model Nyle DiMarco.

Chelsea Lauren/Variety/REX/Shutterstock

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A Dancing with the Stars Baby! Maksim Chmerkovskiy and Peta Murgatroyd Are Expecting Their First Child

But now in her second trimester, Murgatroyd is enjoying life on the road with Chmerkovskiy — who is currently starring alongside his brother, Valentin, in Maks & Val: Live on Tour – and is looking forward to life as a new mom.

“I’m looking forward to nurturing something and just having the baby be the center of our world,” says Murgatroyd. “I’m looking forward to putting all our energy into this beautiful soul.”

Courtesy Peta Murgatroyd and Maksim Chmerkovskiy

They still don’t know whether they’re having a boy or girl, but “we’ll be in trouble with a little me running around,” jokes Chmerkovskiy. “So hopefully they’ll be a lot like Peta.”

The happy couple admits they were planning to start a family, but initially didn’t envision having a baby until after their 2017 summer wedding — not that they mind!

RELATED VIDEO: WATCH: Maksim Chmerkovskiy Shares When He Knew Peta Was ‘The One’

“The timing is perfect, actually,” adds Murgatroyd. “I’ll have the baby in January and then I’ll still have about six months to prepare for the wedding.”

“The baby will make a wonderful addition to the wedding party,” adds Chmerkovskiy. “A wonderful, tiny addition.”

For more on Chmerkovskiy and Murgatroyd’s happy news, pick up the latest issue of PEOPLE, on newsstands Friday.

— Patrick Gomez

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