First - pardon my weary old eyes, but it's hard to discern what's going on in your pictures!  I can tell that something has a problem, but I can't really tell what's going on - so this is a bit of a stab in the dark (but usually good advice anyway).

That said, I must agree with ernyoka1.   Your hip-group shouldn't be shaped like granny panties - you should have something that only includes the bare minimum amount of pixels between the legs.

Top, good.  Bottom, bad.