Miley Cyrus mileyselena.jpg Miley Cyrus may seem like a sweet girl - but as Selena Gomez and Demi Lovato found out, she can get downright vicious!

In a video recently posted to YouTube, Miley and her pal Mandy put Selena and Demi on blast for a recent video they'd made. Among other things, Miley singles Selena out for her "emo" style and taste in t-shirts, while mocking Demi for previously having a gap between her teeth.

Of course, the timing pf Miley and Mandy's video is a little suspicious - after all, it's coming hot on the heels of a bunch of rumors that Selena's dating Miley's ex-boyfriend Nick Jonas!

What do you think - is Miley just lashing out here? Or might she be showing her true colors?