A rep for 14-year-old Hannah Montana star Miley Cyrus issued a strong denial on Monday after a fake teen magazine article began making the celebrity blog rounds claiming Cyrus is pregnant.

"It's 100 percent false. Someone doctored a J-14 article and posted this online," publicist Meghan Prophet tells PEOPLE. "It's ridiculous and completely untrue. Miley is not pregnant. She just wrapped season two of Hannah Montana and will go on tour beginning Oct. 18."

The rumors began circulating when a blog posted a mock interview with the teen star, supposedly given to J-14 magazine, saying she was expecting a baby. J-14 has also posted a denial on its Web site saying, "Despite Internet rumors, J-14 NEVER reported that Miley Cyrus is pregnant."

Indeed, the young star is actually about to hit the road a 54-date tour that kicks off on Oct.18 in St. Louis. In fact, she'll play to a sold-out crowd one night before her father's tour comes to town.

"Miley is opening for me in Nashville," her dad, singer Billy Ray Cyrus, quipped with a wink, noting that she'll actually be playing to a much larger crowd than her dad. "She plays the [Sommet Center] arena with 18,000 people on Thursday night and I play the Wildhorse Saloon for 1,800 on Friday night. We're both in town for the same 24-hour period and we're both sold out."

The elder Cyrus, speaking to PEOPLE last week from the Hannah Montana set, added that hitting the road "makes me very happy. There's going to be people in the audience and people singing along again."

Billy Ray's tour, to promote his latest CD Ready, Set, Don't Go, kicks off Sept. 29 at the University of Texas.

As for his time on last season's Dancing with the Stars, he jokes that the career detour "got a little sick and twisted."

"I found myself on the wrong side of the microphone," says Cyrus. "I was on the dance floor and no, I'm supposed to be the singer...The dancers dance and I sing."

But he'll be going back for more: On Oct. 9, Cyrus will make his return to Dancing and "get things right" as the show's guest performer.