Then: These mop-topped brothers rose to instant stardom with the insanely catchy "MMMBop."
Now: All three brothers are doting dads and fathers. Isaac has two sons, Taylor has five children, and Zac has a son and a daughter. They're all still making music together too, only now they do it under their own label, 3CG Records. Isaac, Taylor and Zac also have cameos in Katy Perry's "Last Friday Night (T.G.I.F.)" music video.