If you ask us, a simple T-shirt is a wardrobe essential. Worn under a blazer or on its own with jeans, we'd recommend investing in multiple colours and different silhouettes, from cropped to fitted.

When it comes to formality in fashion, there's been a long-standing conflict around our waistlines: to tuck, or not to tuck. On the one hand, tucking in your shirt looks neat, tidy, and professional.

When half-tucking a T-shirt, López has a simple rule of thumb: tucking in the fabric between the front two belt loops. This ...