"We're kind of doing cupcakes," the country star tells CMT Radio Live's Cody Alan. "I consider myself a very traditional person. More than anything, we're going to get married, that's the important part. And we want everyone to have a good time, so we're doing some things like that, that are a little bit different."
Underwood is ordering the cupcakes from IveyCake in Franklin, Tenn., which is run by Ivey Childers – the wife of Underwood's bass player, Mark Childers. Ivey "makes the most amazing cupcakes in the universe," Underwood says.
Underwood, 27, and Fisher, 29, who became engaged in December, haven't announced a date for the wedding. When Alan asked when he could expect an invitation, Underwood replied: "Aw, well, we are trying to keep it small, so don't be offended."
The wedding plans have been progressing slowly, with Underwood busy with music and Fisher's season with the Ottawa Senators still continuing.
"There's a lot going on," Underwood says. "They are still in the season. They actually only have a few more season games left. I'm touring until the end of June, and have a few shows in July, so we're working on it here and there. We have a few things coming along."