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The last inductee into the 2007 Celebrity DUI club, Mischa Barton was spotted partying with the aid of "White Lines" at Teddy's Friday night.

The SONG, not the drug!

Although sources say she was drinking what looked to be a Kir Royal (champagne and cassis) in a champagne glass while dancing along to the classic Grandmaster Flash track and partying with friends.

Way to start of '08, girl!