Gaining inches but not weight

Are you building muscle? The human body will do all kinds of shifts such as releasing water/storing water as well as build muscle and burning fat. The body has its own agenda. C that is to keep you alive and maintain a weight it's happy at. It'll do all kinds of crap to maintain a specific weight, hence people hitting plateaus. If you've recently changed your way of eating/diet maybe your body is trying to hold onto stuff. If you're dehydrated perhaps, it's holding water in your muscles. Your muscles are located in those spots you spoke of. I hope your body complies with whatever you wish to gain/lose.