Transcript for Loyola-Chicago holds 100th birthday party for superfan Sister Jean
Finally tonight here, she's America strong, 100 times over. Make no mistake. This smile, sister Jean, is the good luck charm. And the dream is alive! Reporter: Last year, March Madness. Sister Jean Dolores Schmidt, the secret weapon of the Loyola Chicago ramblers. At every game -- That's their guardian angel right there, sister Jean. That was all U! Reporter: That wassal you, sister Jean. The team's chaplain and chief cheerleader. Good and gracious god, we're here to beat Miami. Reporter: No offense, Miami. And I remember asking her about divine intervention. I'm curious what you say to the team, we see them leaning over to you and kissing you and hugging you at the end of the game, but what do you say to them before they head out? I say a prayer. But sometimes there's a little more than talking to god in the prayer. But I do begin with good and gracious god. I pray for the other team, perhaps not as hard. Oh! Reporter: Tonight, all the prayers from that team and all the birthday wishes are for her. Happy birthday to you Reporter: Sister Jean today turning 100. And birthday wishes from the retired sisters from her order back in Iowa. Happy birthday Reporter: We hope she feels the love. And on this birthday, a piece of advice from her. In order to have an impact on people, we have to be happy ourselves. Just be kind, wake up, be joyful. Isn't that the trust. Happy birthday, sister Jean. I'm David Muir. I hope to see you right back here tomorrow.
This transcript has been automatically generated and may not be 100% accurate.