Mischa Barton Despite reports that place Mischa (along with Ashlee Simpson-Wentz) on Melrose Place, Marissa Cooper is actually going to be joining a new Ashton Kutcher drama for the network called A Beautiful Life about a group of models, where she'll play -- get this -- "a supermodel and veteran of the high-fashion circuit who is struggling to keep on top," according to Reuters.

Is that why Mischa lost so much weight recently? Or is it because of the weight loss that she was cast as a "supermodel"?

Here's Mischa trying to look "modelesque" outside of the Viper Room last night. Ya think she succeeded?