Miley Cyrus Pixie Cut rivaled by Christina Aguilera's Purple Locks

Miley Cyrus isn't the only one to make a recent bold move concerning her newly platinum locks. Christina Aguilera was seen rocking some purple-tinted tips during an NBC press conference for the upcoming season of "The Voice." Check out photos of both pop stars' new dos', which songstress do you think picked the better style?

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