Mother of 19 Michelle Duggar is celebrating the birth of her second grandchild -- a boy born to her son Josh and his wife Anna.
The new addition -- weighing in at 8 lbs., 5 oz. -- arrived on Wednesday.
Josh and Anna were married in 2008 and already have a daughter, Mackynzie Renée, born in October 2009.
The couple has not yet released the name of their son, but they've said they want to keep an "M" theme going.
The lives of Michelle and Jim Bob Duggar and their growing brood are documented in TLC's "19 Kids and Counting." TLC takes a behind-the-scenes look at Josh and Anna's baby preparations and the birth of their son in "19 Kids: First Grandson," a one hour special airing this Sunday, June 19 at 8 p.m.