So True? So False? Did Christina Aguilera Diss Justin Bieber on The Voice?!

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Is Christina Aguilera on a dissing spree this season?!

The judge gave fellow former Mouseketeer Tony Lucca her honest but blunt critique on his performance not too long ago. Now, Us Weekly reports that The Voice coach seemed to continue the blows with Justin Bieber last night.

The Biebs appeared on the reality show to feature a teaser clip of his upcoming music video for "Boyfriend"which was superhot, by the wayand announce his album's release date. But when he went to say goodbye to each coach, he and Xtina shared a somewhat awkward kiss on the cheek, followed by a cold expression on her face.

Is Aguilera too cool for Bieber? Hold on to your Justin posters, people, because this rumor is...

MORE: X Factor Forecast: Will Britney Spears Cause Controversy Like Christina Aguilera?!

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So false!

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