Josh and Anna Duggar Expecting Fourth Child

The Duggar family of "19 Kids and Counting" has announced they are expecting yet another addition to their large family.

Josh and Anna Duggar, who already have three children, announced via Twitter this week that they are expecting their fourth child together. Josh, age 26, is the oldest of the 19 Duggar children that star on the TLC reality show "19 Kids and Counting."

"We are so excited to announce…we're pregnant! #4andCounting #BlessingFromTheLord," Anna announced via Twitter on Tuesday.

The couple added in a promotional video for upcoming episodes of their reality show that Anna is currently enduring morning sickness at nine weeks pregnancy. "I'm nine weeks pregnant, and having a lot of morning sickness," the Duggar family member tells the camera.

The couple is already parents to three children, including five-year Mackynzie, three-and-a-half year old Michael and 18-month-old Marcus.

Josh recently told E! News that he and Anna are striving to be the best parents they can be, no matter the amount of children they end up having.

"It's really not about the number of children you have, but how well are you doing with the children that God has given you," Josh previously told E! News. "We're really just going to take it one at a time. I don't think you can say we're going to set out and say we're going to have five kids or four or three. We have no control over that. God has the control."

Josh's sister, Jill Duggar, is also currently expecting a child with her husband, Derick Dillard.