I need an extremely warm winter coat for someone who doesn't want to look warmly dressed

[BreastmilkDoesAFabLatte]

Does anyone have any recommendations?

She likes to consider herself at the cutting edge of style, and thus wouldn't wear anything that looks remotely outdoorsy. And she would never ever admit how much she's struggling with the cold at the moment.

So I need something which looks all flimsy and cool and fashionable but which will keep her toasty warm.

Any ideas?

How old is she?

some of the coats at Uniqlo - the +J range - are pretty stylish and the down ones would be very warm.

She's 14, isn't she? I know it. What about a hooch coat?

She's, er 28.

Oh breastmilk!

Once you get past 25, you start feeling the cold more. You need a WARM COAT.

Argh no it's NOT MEEEEE.

A friend, who I'm nervous about finding me here.

And besides, I'm the world's most unfashionable person... and significantly older than 28.