^ I don't think she's lost her style. She may not be as stylish as she once was. But she was a 17 year old girl then who had a very manufactured look. Lets not forget she used to be a Zoe-bot.
But I do agree that her outward appearance does hint at something else going on. Often times the pieces she wears are great but she puts them together in such an ill mannered way so as to look disheveled. Reminds me of Britney Spears or Lindsay Lohan in a way.
I don't think Mischa's cut out for hollywood, but its where she's chosen to make her mark. And this is a style forum so it is only natural for us to comment on her outfits. And as it so happens her looks tend to rollercoaster. One day she can look great, and other days she looks down right terrible.
And yesterday was a good day for her compared to the last few weeks imo.