On Sunday, the 38-year-old singer celebrated her son Isaiah Michael's 7th birthday in a sweet tribute on Instagram. "My firstborn turned 7 today. How is that even possible?" she wrote.

Carrie Underwood showered her oldest son, Isaiah, with love on his sixth birthday. The country music superstar, 37, posted two pics to Instagram on Saturday in celebration of Isaiah's big day.

The country music superstar and her husband, Mike Fisher, celebrated the seventh birthday of their son Isaiah on Sunday. Underwood commemorated the occasion with a celebratory post on Instagram ...

The singer has shared her journey of motherhood with fans via social media, and yesterday (Feb. 27) was no different as she celebrated her son Isaiah's second birthday. Underwood posted a sweet ...