Carrie Underwood is a big fan of the NHL's Nashville Predators. It may have something to do with her husband, Mike Fisher playing for the home team.  The Predators are taking on the Chicago Blackhawks in the National Hockey League's Stanley Cup playoffs.

Carrie decided to surprise her hubby and bring the team some luck too before Monday night's overtime win against the Chicago Blackhawks.

When Fisher, his teammates and the crowd rose for the singing of the national anthem, guess who stepped out to sing...Carrie Underwood. Carrie showed her support for the Predators by wearing a personal team jersey with her husband's number 12 on it, and of course, nail polish to match the team's colors. Following her performance, Carrie then took part in the Predators' signature towel wave.

Carrie's surprise was good luck as the Predators won in overtime, 3-2 over the Blackhawks, bringing them one game closer to advancing to the next round in the NHL playoffs.

Following Saturday's win and  during her concerts and on Twitter,  Carrie has been the team's biggest cheerleader. Check it out below.