Most surgeons like you to wear a binder (for your abdomen), but not all. Mine did and provided it. Ask your surgeon. His assistant or secretary should be able to tell you.
Mine also provided two tight compression crop top style bras. Kind of like sport ones. Again, ask your surgeon.
There's some good lists available at the Reclaim Your Curves website and on a thread I started in the Choosing Breast Reconstruction group. Lots of people contributed so it's really comprehensive. It's called 'Shopping for the operation'. K xox