With all of the shock, there was a lot of happiness.
"I can't stop smiling," one fan said. "I can't stop thinking about it. This means the world to me."
For one fan, she even made an in-person visit to gift her son with some presents when they were expecting a UPS package.
Swift has become known for making unexpected fan visits. In April, she attended a bridal shower with a boatload of gifts and left the bride-to-be saying, "She's an incredible person and amazing friend" and who can forget that adorable portrait session she took with a young fan while she was out jogging in Nashville?