HOLLYWOOD -- Poor Miley Cyrus.

Just when she puts that provocative Vanity Fair spread behind her, along come accusations that one of her popular Hannah Montana tunes was a virtual carbon copy of a raunchy song by Los Angeles punk rock outfit, Lustra.

While lyrically speaking the two songs seem to be worlds apart, a handy little YouTube comparison would suggest Miley's song, Rock Star, has a lot of explaining to do.

Not only does it share virtually the same guitar line from Lustra's Scotty Doesn't Know, the crude but admittedly catchy ditty that was featured prominently in the 2004 gross-out teen comedy EuroTrip (with an amusing, tattooed Matt Damon doing the lip-synching), but the Cyrus song also appears to have borrowed liberally from its hooky chorus.

To be fair, Cyrus didn't personally write the tune which was performed on her recent Best of Both Worlds concert tour -- it was credited to a trio of songwriters which has provided her with material in the past -- but there definitely appears to be something of a Miley backlash brewing.

The good news is the 15-year-old phenom should have already received a few pointers on the perils of overnight success-dom from her Achy Breaky dad, Billy Ray.

If worse comes to worse, she can always blame everything on her conniving evil twin, Ms. Montana.