I have the same problem for work trousers, jeans are fine since they stretch, I've started wearing dresses and pencil skirts for work, loads around at the moment made with pointe fabric which stretches and is comfy, peplum dresses and tops help hide a bit of a belly. Tunic tops with skinny jeans and boyfriend cardi works for me as we'll. I used to hide under big baggy clothes till I finally worked out it made me look even bigger. Do you have a friend that you could shop with who would be honest?