Kym Johnson, Robert Herjavec expecting first child

Dec. 12 (UPI) -- Celebrity couple Kym Johnson and Robert Herjavec are expecting their first child together.

The 41-year-old Australian dancer announced in an Instagram post Monday that she's pregnant and expecting a baby with the Shark Tank star.

Johnson posted a photo of a sonogram that appeared to show her unborn child giving a thumbs up. She did not share further details about the baby's sex or due date.

"'It's a thumbs up,'" the star captioned the picture, adding a thumbs up and heart emojis.

Herjavec already shares three children, Brendan, Skye and Caprice with ex-wife Diane Plese. He and Johnson met during Season 20 of Dancing with the Stars in 2015, and married in Los Angeles in July 2016.

"It feels like we've known each other forever," Johnson told People in July. "It's been almost three years since we met. He's just amazing. We're best friends, and it's just easy."

Johnson last competed as a pro in Season 24 of Dancing with the Stars. Herjavec, meanwhile, recently returned for Season 9 of Shark Tank, which premiered on ABC in October.