One of the best top layers ever is the trench coat. It's a basic piece every woman should have in her closet. Ideal for autumn and spring when the weather is playing with our nerves.. I would suggest you a neutral color, so it will be easily combined with any clothes.
Today, I wore my trench coat, which I adore and have it in my closet ten years now. As you can see it's never out of fashion.
Zara trench coat (old) & wedges, Asos sunnies, Loisir 3 similar bracelets, Studded old bracelet (gift from a beloved friend)