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Ke$ha took a walk on the wild side yesterday, wearing a strange tiger mask to conceal her face in New York City.

While we can appreciate that perhaps she wanted to hide a blemish or something, what she really should have been hiding were those bruises on her legs we spotted the night before!

Ke$ha, who recently announced plans to embark on her own tour, has been seeing Australian drummer Alex Carapetis. We hope he didn't use her thighs as a drum!