Believe it or not, it’s been 17 years since Lady Gaga first entered our musical lives with her instant-classic pop hit “Just Dance.” Over the years, the 38 year-old has worn many hats — most recently,

Despite the ongoing fan theories, sources confirmed to Rolling Stone that Swift does not appear on Gaga's "How Bad Do U Want Me." Billboard confirmed this and has reached out to G

Fans are convinced that they hear Taylor Swift's vocals on Lady Gaga's new album 'Mayhem.' Swift has not confirmed her work on the project.