Happy Birthday, Michelle Duggar! The Counting On matriarch turned 51-years-old today and in honor of her big day, her daughter, Jessa Duggar, posted an album of throwback photos on Instagram. She captioned the sweet snaps, “Happy Birthday to this beautiful, godly woman! I love you so much, Mama. You’re my greatest hero!!” Watch the video below to see the adorable pics!

However, the 24-year-old isn’t the only one sharing the love — after all, Michelle has 19 children! Jill Duggar also took to social media to post a heartfelt tribute to her “Mamaw.” She wrote, “Happy Birthday to the sweetest, most amazing mother in the whole world! Ever since I became a mom, I’ve had a whole new appreciation for everything you did as a mother! Words can’t express how grateful I am for you! Derick and I couldn’t ask for a better ‘Mamaw’ for our little kiddos. We all love you dearly.” Adorbs!

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The reality star mama just recently became a grandma — for the ninth time! Her son, Josh Duggar and his wife Anna are now parents of five little ones after welcoming a baby boy named Mason Garrett Duggar. The family revealed that he was born today, Sept. 12, measuring in at 22 inches long, and weighing in at 9 pounds, 1 ounce.

“We are so thankful and happy to announce the arrival of our new son, Mason Garrett Duggar. Both he and Anna are doing well,” the statement on the family’s website read. “He arrived today without complication and we already adore him. The entire family is ecstatic over the arrival of another beautiful blessing. We want to thank everyone for your prayers, kind words, and well wishes. We appreciate it more much than we could ever express. We pray God blesses each of you with an abundance of the kindness you’ve shown us.”

Counting On airs Mondays at 9 p.m. EST on TLC.

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