The film stars Miley Cyrus and her father Billy Ray Cyrus, who also headline the popular TV series "Hannah Montana."
"I'm making a cameo," Swift, 18, told People.com. "So I'm so excited about that. I'm playing one of my own songs and just in the background of one of the scenes. ... I'm just like the bar band, which is kinda fun. ... I'm just really excited about it because it's really cool when some of my little fans will come up with a 'Hannah Montana' shirt on, and I want to be like: 'Guess what? I get to be in that movie with her!'"
Swift said on Monday's "Today Show" that her fellow teen recording artist is "awesome."
"I love her so much. She is so incredibly funny and sweet!" Swift said. "It's fun to get to see her, because we both have been on the road constantly and, with us both in Nashville now, it will be cool to get to hang out with her."