Nature has not given you a model's dimensions, but you can lose weight and get into shape and still look good. Sure, it will be a little harder for you than for someone more naturally hourglass shaped, but you can look good also.
Most women are pear-shaped actually. The exact shape varies, but overall most women have bigger hips with smaller shoulders. Most guys will like any body shape as long as the girl is toned. What I mean by that, is that you don't jiggle too much, especially around the tummy area. Otherwise, there's not much you can do. But don't worry about it, there will always be a guy out there who likes that shape.