6D7F3817.jpg087P3575.jpgMischa may have copped a plea in her DUI bust late last year, so what's a girl to do but celebrate with a shopping spree!

Mischa hit up trendy Melrose Avenue Tuesday afternooon where she dropped over $700 at Wasteland, a vintage clothing store.

That's a lot of used clothing.

Our photogs say she dropped her dough on sunglasses, dresses and sandals, before changing from her floral mini-dress into these sweats on the way out:

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Seriously, Mischa? You dropped 700 bucks on vintage clothing and this is what you choose to wear out of the store? I think I even spot some camel toe!