I have written about Baukjen before, it's a brand that i have only really come across this past year but that i have been really impressed with. They do great quality, versatile basics that can be dressed up and down, that wash well and last.
I have some perfect leather leggings that i got last year and lived in, i think they were my most useful item of winter clothing - definitely worth the investment. I have also recently got a mint green leather biker jacket (of dreams), the leather is so soft and it fits perfectly.
The other thing to look out for is matching tops/ shirts and trousers which are great if you are a different size on your top to your bottom and can't find a jumpsuit that fits - if you get them as separates it gives the illusions of wearing a jumpsuit but will be your perfect size.
Baukjen also do great sales (i love sales) and have the kind of things in the sales that you don't regret buying! Here are some of my top picks from the current sale:
This post is in collaboration with Baukjen but all thoughts are (totally) my own!