Peta Murgatroyd, Maksim Chmerkovskiy are ready to make their three-year-old son, Shai Aleksander Chmerkovskiy, a big brother! The Dancing With The Stars pros told HollywoodLife in an EXCLUSIVE interview that while they don’t exactly know when baby number two… or three.. or four… will happen, they’re aiming for 2020! Maks told us at the G’Day USA Standing Together gala and fundraiser that he’s looking forward to a “new chapter” after turning 40.