One of my spring wardrobe staples is this super versatile tweed coat (also here): it is warm enough for chilly mornings during transitional weather, but not so bulky as to be shapeless. This statement coat also pulls together outfits in an instant and energizes even the most tired of ensembles (I am looking at you, white-blouse-and-jeans).
I have also been belting ALL of my double-breasted coats (using a wider leather belt), which instantly transforms them into coatdresses (works best for smartly-tailored styles constructed out of lighter-weight material, like flowy trench coats; just don’t forget to wear a slip underneath). This method works only sort-of well here because my coat is (intentionally) a little loose on me, but I do like how it boldly defines the waistline.
As seen below, my favorite way to wear this coat is with sweater dresses and tall leather boots, which requires very little effort but looks well put-together. And less-is-more with tweed coats, as they can feel a tad fussy on their own, so “casualizing” them helps to strike the right balance for daytime dressing.
More tweed coats here: