Another actress that has undergone the loose-all-the-body-fat mutation is one of my favourites: Jennifer Connelly. She still looks hot, but I preferred the way she was before.
One thing that surprised me in a positive way was Liv Tyler in that infamous movie "Women and Dr. T" where she appeared slightly overweight. In LOTR she was skinny, but I don't think she went through the Lohan transformation...
Daniel