Claire they aren't silly questions, and if you need answers you are always right to ask us to get them. It is usual for the Neurosurgeon to make 2 or 3 small incisions so that he can place the shunt valve, so please don't be alarmed. It depends where the valve is being place that determines how many incisions are made.
Y:es you can still wear an underwire bra as normal, I myself have a Vp shunt and I wear underwired bras. It's a perfectly reasonable question to ask. We encourage you to ask them no matter if you think they are stupid questions so never apologise for any you ask. These are the kind of things that you need to know for your own peace of mind, and by asking them and having them answered, other members who have the same questions will see them.
Heidi