In reply to Tall Clare:
I've got a feeling you have to book in advance for the last supper - no idea how, but I know we realised we wouldn't be able to just turn up and see it.
And I think the Duomo was covered in scaffolding (as was La Scala) which may be why I don't remember another incredible about it.
It is a very fashion conscious city - and I'm scruffy at the best of times - but I wasn't escorted out of any of the hundred or so posh shops my wife dragged me into. Even the ones that were so posh they only had 3 garments on display (and 4 assistants!).
Not as interesting as Rome or Venice, but certainly a lot nicer than Naples. However if you can get out of the city I'd really recommend Bellagio up on Lake Como - I was very tempted to spend £75 on a tie, and would have done apart from the fact that I never wear a tie, but it really was a thing of beauty.
But don't hire a car and try and drive out of Milan on a Friday evening - terrifying !!