Right now, it’s chilly in the morning but warm in the afternoon. So I just wear a sweatshirt. Later when it’s colder all day, I’ll add a camisole. Right around Christmas I might add very lightweight long underwear. We’re not anywhere near as cold as Canada or the US Midwest, though. I think it’s only been below zero (F) here a couple of times in the last twenty five years.

Aside from tights, almost exclusively over. That makes it easier for me to adjust to temperature changes throughout the day, as in our building there are warmer and colder locations.

I used to do both, when I worked in office buildings. But now I only layer over. The bakery is colder than any office building in winter, but I’m never just sitting there…

I’m more of an over person. I warm up relatively quickly, so I have learned to stick with light underlayers when I do chose them. I hate being hot, so I am careful these days to avoid heavy sweaters and toppers unless it’s truly cold and I will be in an environment that won’t be blasting heat.

Mostly over until it's really, really cold and then both. No need to size up for under because I add very fine long underwear to whatever I'm wearing.

Definitely both! I wear a cami almost every day under my sweaters and shirts, and add jackets (blazers, jean jackets, and then coats) as things get colder.

Team both and I live in a warm temperate climate!

Both. I am always cold.

LaPed, this is for you—wear a merino base layer for a week, get a chance at icebreaker stuff. https://www.globetrotter.de/ma.....XHaVNIKqUE

Both, but I only layer under in the coldest conditions or at times when I need to look as if I am wearing a single layer, if that makes sense -- i.e. dressy occasions when it is simply going to be too cold in the room!

Mostly over unless it's the rare snowy day (we get only a few of those) in deep winter.

Usually over. I want the flexibility of being able to remove layers if I end up getting warmer than usual, like going for a brisk walk, sitting in a sunny room, or housecleaning. Layering tops doesn't usually work well since the hems slide up the hip and make a bulky wrinkly mess.