It's more than likely happened to all of us. When you buy a new white shirt and wear it like it's just another wardrobe item. However, white shirts can be see through and there's nothing classy or professional showing up to work in a transparent shirt and a black bra. Not only will your boss not approve but it's pretty embarrassing. It's much better to buy a cute camisole, even if your shirt isn't see-through. This guarantees that if there is a freak weather storm drenching you, at least you won't be flashing people in your office.