The Robertson family, best known for their record-breaking reality show, Duck Dynasty, just grew a little bit bigger.

Alan the "Beardless Brother" and his wife Lisa are proud grandparents after their daughter Alex Robertson Mancuso welcomed her second child with her husband Vincent Mancuso.

Alex and her parents weren't part of the original cast when the reality series premiered on A&E. They joined the show during the fourth season, and made their first appearance when Phil and his wife, Miss Kay, renewed their vows.

Fans of the show will also remember Alex and Vinnie from the episode of Duck Dynasty where they helped Miss Kay open her bakery.

You can watch their appearance in the video below:

The Louisiana family have since been sharing regular updates with their fans, and last week they revealed the news of the arrival of the newest bundle of joy on social media.

On September 25, Alex and Vincent welcomed a healthy baby girl weighing in at seven pounds, 15 ounces.

Alex's mother shared a series of posts on Facebook including photos of the baby.

"Momma [and] baby are perfect!" Lisa wrote in the caption. "Daddy ain't bad either! Mam [and] Pap "” blessed!"

Lisa also revealed that she has been calling Pearl by the adorable nickname, "the squirrel."

Other members of the Robertson clan have also shared posts on Facebook to express their happiness over the new arrival.

"The Robertson family continues to grow," wrote Missy, who is married to Phil and Miss Kay's son, Jase. "Meet baby Pearl! Granddaughter of Alan & Lisa. She already knows where the camera is. Congratulations, Alex and Vinny! #MadeInGodsImage"

Congratulations to the Mansuco and Robertson family!