MANILA, Philippines ? (UPDATE) International pop star Charice Pempengco tweets to deny she's joining the cast of the award-winning American musical comedy-drama TV series "Glee."

"I just want to let you all know, that it's not true that I'm going to be on Glee," said Pempengco in her official Twitter account.

Her Philippine manager, Grace Mendoza, told the Philippine Daily Inquirer Entertainment that Pempengco was joining the show, which won the 2010 Golden Globe Award for Best Television Series Musical or Comedy.

"Yes, it's true, Charice will soon join ?Glee,? Mendoza said.

"And not just as a guest, but as part of the cast in a new season," she said.

But Pempengco countered, "How I wish! Haha."

"Maybe she is just confused," she added, referring to Mendoza's announcement.