I wish you luck as well.. if by luck, you mean not getting sick.

I realize it is possible to be thin, and still be un-toned. In this case, losing more weight will not get rid of it. Toning up the soft areas with yoga or weights, WILL diminish it. Denying yourself nutrition will actually just get you MORE saggy areas, and a whacked-out metabolism that will lead you to GAIN weight. Not what you're looking for, I'm sure!