19 Kids and Counting Exclusive Clip: Hold On To Your Ovaries, Ya'll

Stars of TLC's megafamily show introduce the newest member of the clan in this first look at Sunday's special, 19 Kids: First Grandson

Would it be super-immature of us to respond to the footage above with "OMGZ BAYBEEZ!!!"? Because that's kinda how we feel...

Anna Duggar, wife of Josh Duggar, oldest of the 19 kids of the 19 Kids and Counting Duggars, just had her second baby, and in this exclusive sneak peek, Anna introduces Baby Boy Duggar (name still top secret) to his big sister Mackynzie. Adorableness ensues.

Press play to see the clip above, and then tune in this Sunday at 8 p.m. on TLC to watch 19 Kids: First Grandson.