How can a lose hip and thigh fat? are there any certain foods or exercises i can do

All over fat loss: Spot fat loss doesn't work. When you lose fat, it is lost from all over, not just over the hips and thighs (or any other "problem area"). Exercises for a particular body part will strengthen the underlying muscles, which will make that particular area look better however. Here's a link to some good thigh exercises: http://www.Fitnessmagazine.Com/workout/thighs/exercises/top-thigh-exercises/.