Josh and Anna Duggar Welcome Baby Boy!

Credit: Sean Enlow/TLC

19 kids plus 2 grandkids!

Josh Duggar and wife Anna welcomed their second child on Wednesday.

As reported on the Today Show, Anna, 22, gave birth to their son just before 7 p.m. and he weighed a healthy 8 pounds, 5 ounces. Josh, 23, is the eldest son of Bob and Michelle Duggar and costars on TLC's 19 Kids and Counting about the Arkansas clan.

It's the second child for the young couple, whose daughter Mackynzie is 20 months. So far, the family hasn't yet revealed the name of the little boy, noting only that his name will begin with the letter "M."

Josh's mom Michelle, 44, gave birth to her nineteenth child Josie 18 months ago.

The family's latest addition gets his starring moment this Sunday on the TLC special 19 Kids: First Grandson.