It is not going to help you lose inches. I eat a cup of blueberries daily because I love them. Does nothing for my waistline.
If you want to lose inches, you need a calorie deficit, plain and simple. If eating blueberries means you don't eat something else, high in calories, then you might see some differences, but otherwise, no, just eating blueberries won't cut it.
The anti-oxidants are good for you though! But if you don't love blueberries, you could probably find something else with antioxidants that you do prefer.