What diet/excercises can I do to lose hips?

I'm a model, living in South Korea. I'm relatively skinny, but definitely not as skinny as they would like me to be. The agency tells me all parts are perfect except for my hips. Shopping in a Korean market is hard, and finding healthy foods is not easy. Any suggestions of what to do at the gym to lose the inches on my hips? and generic foods i can eat?