As mentioned in the previous post, it is best to select a pant size based on your hip requirements. As a follow up, I have put together a diagram for making waist adjustments. This alteration can be used to both increase and reduce the waist. Now this is just a guideline; more of a “for instance” alteration. Only you know the numbers you need, so please take this only as a starting point. There are other alteration methods out there, but I think this one makes the most sense.