Proud Apples, wink!
Genetically, I too, was given narrow hips and a thicker middle. After the baby, this situation was even more apparent. But as long as you are working out sensibly and eating sensibly, there are certain things we need to accept about ourselves.
I'm certainly not suggesting to just throw in the towel though. I'm simply suggesting to make the best improvements that you possibly can in a healthy manner. Then, when you reach a point where you are very toned, very strong, very cardiovascularly fit, and find everything on you to be as fit as you can get it, yet you still seem to notice your waist not being as in proportion to your hips, this is when it is time to accept that you look good even with a bit smaller of a hip and a bit wider of a waist.
I can tell you what I do to work with my situation and perhaps maybe some ideas will help you too.
I do 4 to 5 days of cardio per week. I find running to help trim the waistline for me. I also find the movements of kickboxing to help trim the waistline. I like to do a variety of cardio activities but I try to include these in the mix for these exact reasons.
I weight train each muscle group of the body at least once per week. I like to work my shoulders harder to give an illusion of a thinner waist. My back is genetically wider and that also helps with the slimming illusion. But if genetically your back is not wider, you could work your lat muscles a little extra to bring more of a "V" shape out. As for my hips, I really can't change my bone structure so I just rely on my cardio and leg work activities to keep them in overall good shape.
When I eat sensibly (and I know it is very hard to stay "good" in this category), I try to limit my starchy carb intake and junk foods(ie: fried (such as potato chips), fried sugary (such as donuts), and bready (such as cheese nips, soft pretzels). I don't like to discuss diet because it is a very involved topic that can get way beyond my scope of knowledge, so I'll stop here. But I will say that if you would like more guidance on how to establish a better food plan, consult a registered dietician in your area.
Hope this helps