"We had so much fun on the `Fearless' tour the first time around that we decided that we had to keep going with it," she says. "So we will be relaunching the `Fearless' tour in February in Australia, and then coming back and doing a bunch more cities in America."
The 2010 tour opens Feb. 4 in Brisbane. Swift will do five shows in Australia. She'll also be playing nearly 30 cities throughout the U.S. and Canada. Kellie Pickler and Gloriana will return as the opening acts.
All 52 concerts on the 2009 tour sold out in minutes, including New York's Madison Square Garden. Swift said she hopes the second go-round will be as successful.
"I always expected to have to do a lot of stressing out about selling tickets. And then I went on my first headlining tour, and everything just sold out," she said. "I've never expected that kind of success. I've never just felt entitled to my shows selling out or things like this happening to me, but the fact that they've happened to me has been wonderful."
She said her fans make her feel like she's "won the lottery of dreams coming true."
Swift was the first country act to win at the MTV Video Music Awards, beating out Beyonce and other acts to win best female video for her hit "You Belong With Me." (Kanye West hijacked her acceptance speech, but later apologized.)
Her 2009 tour wraps up this weekend, and for Swift, it's bittersweet.
"It's going to be so sad knowing that we're not going to see each other for a while, everybody on the tour from the lighting to the crew, the dancers and the band, and everybody that have just become even more of my family in the last couple of months."
But she said the last weekend of the tour is also about "elaborate pranking."
The members of Gloriana might want to watch out. According to Swift, their pranks so far have included sticking an adhesive bandage on someone's back before the encore. Swift's message to them: "You don't even know what's coming in Minneapolis. It's going down."