Here's proof that Carrie Underwood's son is her biggest fan on the planet

Sunday was a huge night in Carrie Underwood‘s household. It was Game 2 of the Nashville Predators vs. Winnipeg Jets in the Stanley Cup playoffs, which means Underwood’s husband, Mike Fisher, was on the ice. The songstress lent her vocal talents to the event, singing the national anthem. The pair brought their 3-year-old son, Isaiah, to the stadium with them for the big NHL event.