In ancient China, it was considered the height of beauty for women to have very small feet, and in order to achieve this ideal the feet of young girls were bound with hard bandages which were kept on for many years. This caused serious deformation and prevented these women from ever walking normally. Fortunately, this is no longer accepted.
Your weight is completely normal; it is the weight your body is intended for and that is the reason why it is so difficult for you to go down in weight. Women should have a little fat on their hips and thighs. It is probably a reserve which nature saves for pregnancy and breast feeding and is a part of the genetic programming.
You need to free yourself from unreasonable expectations. The weekly magazines and fashion designers who form unnatural ideals of beauty don't represent your interests. Slimming under what is biologically normal can be dangerous and can lead to serious eating disorders. Try to accept your body as it is. Choose clothes which bring out the best in you; use wide skirts which conceal hips and thighs, if you think it is necessary.
Concentrate on bringing out other parts of your appearance and personality instead of striving for unreasonable slimness. If you go in for accepting and developing your possibilities your life will be much happier.