Anna Trebunskaya recently welcomed a baby boy.
"@nevinmillan & I would like to announce the birth of our baby boy, Kaspyan Millan, over the Labor Day weekend," Trebunskaya wrote. "It was a beautiful, natural water birth at home. Mama, baby and family are doing great!"
"Thank you for all the love and support!" she added to her followers.
Us Weekly reported Kaspyan was born Saturday, Sept. 2.
"We are all so excited to get to know the new addition to our family and so grateful and blessed for this lovely gift!" the star gushed.
Trebunskaya already shares 3-year-old daughter Amalya with Millan. She previously told Us Weekly her family was looking forward to welcoming a baby boy into the mix.
"The most excited is my daughter. She keeps saying, 'It's too long mom,' nine months -- that's a third of her life!" the dancer said.
The ABC reality competition announced its official Season 25 cast Wednesday.