Youngest Hanson Expecting His First Child.

Remember Hanson with their delicious "Mmm Bop!" that drove teens (and a few of us Moms, we admit it!) into a frenzy a few years back? The youngest of the pop trio, Zac, is about to become a father for the first time at 22 years old. It's hard to believe the youngest is 22... Man, we feel old now. And is it just us, or does 22 sound really young to be having a baby? Anyway, this new addition will make five Hanson offspring. First born Isaac and his wife have a 7-month-old son, Everett, and middle brother Taylor has three children: Ezra, 5, Penelope, 2, and River, 1. Congrats, Mmmm Pops! 

Take a walk down memory lane with Hanson.