Carrie Underwood [1] and Mike Fisher have one supercute son! The couple tied the knot in 2010, and they welcomed their first child, Isaiah Fisher, in February 2015. A week after his arrival, the little one made his Instagram debut [2] with a sweet close-up. Since then, both Carrie and Mike have shared adorable pictures of "Izzy," including precious selfies and candid father-son moments. Keep reading for all the cute photos of Carrie's baby boy, and then check out her buzzy CMT Awards performance [3].