Theory has been a go-to label for flattering and sleek separates since 1997. Its collections are a modern edit of elevated essentials, always chic and minimal, but importantly for those hard-working items you wear on a weekly basis, form is never at the expense of function. Which is to say, Theory pieces are seriously comfortable, perhaps because they always fit so well. For Laura, it is the brand behind one of her most-worn and recommended knits – a black cropped cashmere jumper. While for Petro, who loves tailored separates, the suiting has a slightly-fitted aesthetic that looks effortlessly polished. Perhaps what we love most is that everything is always reliably cool, without ever trying too hard.