Hmm so do you just have a tiny waist and bigger thighs/butt?? I have the same but i'm not a pear shaped, i'm even all over. But what i find is that say a size 8 pants fits me all over but is too loose on the waist. I just wear long singlets under my tops to cover it. Unfortunately i don't think they make special pants for us!

I have however found some 3/4 pants at target that fold down over the waist band, they almost look maternity but they aren't. Basically i've found these don't gape much at all, i think its the extra fabric around the waist. If you don't know what i mean i can take a pic of mine and show you?