Melbourne in Winter - I Must Be Crazy!!

I don't do cold.

It's that simple. I spend my entire winter trying to get warm. Be that as it may I am going to Melbourne in winter. I must be crazy!! I'm not worried about being indoors (in fact, indoors in Melbourne is probably warmer than indoors in Brisbane as our houses are designed to stay cool in hot, humid summers - and also have no internal heating). It's the outdoor bits I'm worried about. Mind you, I can probably keep them to a mimimum. Even so...

I have stood looking at my wardrobe and am certain I don't have the right sort of clothes. I've never been to Melbourne so have no idea what others wear. Anyone got any suggestions on what I should pack?