Kym Johnson and Robert Herjavec are certainly going to have their hands full.

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The longtime Dancing with the Stars pro, 41, and the Shark Tank star, 55, are expecting not one baby, but two!

"We waited so long that we decided to double up!" Kym and Robert told People. "We are very grateful for the blessing of twins."

Kym confirmed her pregnancy via Instagram on Monday, and on Tuesday, Kym posted a picture of her little white dog standing behind the book Good Dog, Happy Baby: Preparing Your Dog for the Arrival of Your Child.

"Shouldn't it be the other way around?! Happy Dog, Good Baby... I have a feeling we're really going to need this!" Kym wrote.

Kym and Robert met and seemingly fell in love on Dancing with the Stars' 20th season in Spring 2015 when they competed as a professional and celebrity pairing, and they continued to date after finishing the competition in sixth place.

The couple got engaged in March 2016 and then quickly tied the knot in Los Angeles in late July of that year.

After appearing on Dancing with the Stars together, Kym told People that her relationship with Robert was amazing.

"I didn't think it was possible, but it just kept getting better," Kym said of her romance. "I'm just so happy to be going through life with Robert. He's the most incredible person."

"I enjoy every minute I spend with Kym," Robert added at the time. "When I met her I felt complete."

Kym is going to be a new mom in her first marriage, but Robert was previously married to Diane Plese, with whom he welcomed three children.

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"It feels like we've known each other forever," Kym told the magazine in August, shortly after celebrating her one-year wedding anniversary with Robert.

"It's been almost three years since we met. He's just amazing. We're best friends, and it's just easy."