The 41-year-old dancer announced her pregnancy by posting a snap of her sonogram to Instagram.
She captioned the adorable snap, 'It's a thumbs up👍🏻🤰💕'
This will be the Australian-born dancer's first child, and the fourth for Herjavec, who has three children from his first marriage to Diane Plese.
The new parents-to-be have been married since 2016.
Congratulations to the growing family!