Country music superstar Carrie Underwood took to social media to share a rare photo of her son Jacob on his second birthday. In the post, Underwood expressed her love and gratitude for her son, who was born after the couple experienced three miscarriages. Underwood's husband, Mike Fisher, also shared a photo of Jacob, expressing joy and excitement for what the future holds for their son. The couple welcomed their first son, Isaiah, in 2015.