sorry sorry frazzledoldhag (I bet you aren´t really a FOH) back to Helsinki....but if your dh is norweigen then a lot of the nordic stuff will be familiar to you....
Helsinki is not chic like chic parts of france, spain or portugal. The first weeks there I was quite surprised at how ungroomed people looked. They put together the strangest patterns, colours, shapes (check out marimekko fabrics and you´ll see what I mean) and it does not always work! However, when they are groomed....
- they pay attention to make up and glasses. Finnish women seem to have great skin (thanks to the sauna?), either that or they do good make up. Glasses always seemed to suit them...IKSWIM.
-they do layers. In winter you need to be able to shed warm layers when you go inside. The inside of houses are often about 22- 24 C so when you come in from -10C you need to unwrap. I used to wear tights under trousers but if I was going to be inside for long would remove the tights. Also lots of overtrousers worn - like bin bags....VERY useful for when it rains or is cold and are out in the country or at the playground with kiddies but SO nasty to look at. Invest in a pair that fits snugly if you are going to do winter sports or spend time outside in the snow.
- they change shoes indoors. I have seen many people arrive at the opera etc with sturdy winter boots and then change into the high heels they are carrying in their bag. In people´s houses, shoes come off at the door(no holes in socks then!).
- they spend their money carefully. They buy expenive/ better quality things which will last longer. And look nicer...
- they wear knee length boots and the visible bits (shoes/boots, gloves, scarves, hats, bags) kind of match...
But what we really need is a Russian woman to come along and tell us what the secret is to looking glam in the cold. I could spot a Russian woman a mile away in Helsinki - even with ice and snow on the ground they would be wearing their high high heels. It was high heeled boots, tight jeans (though I think there were tights under them, but was unable to confirm!) tight fitting duvet jacket (but the longest length allowed was just past the bottom), very expensive handbags. Hats only when it got really really cold.
I found clothes were expensive in Helsinki and the selection was not great. Except for the extreme cold things (which will be easier to find there, though not cheaper) stock up on essentials before you go.