One foolproof ... On the other hand, pairing the button-down shirt with an A-line skirt or leather trousers instantly makes the outfit look more polished. Ahead, the best denim shirt outfits ...

A T-shirt is the cornerstone of many of our wardrobes, as it is the ultimate foundational piece that looks just as good with straight-leg jeans as a tailored trouser suit or under a silk slip dress.