Of all exhausted clichés aimed at various items of clothing, the ones associated with slip dresses are perhaps the truest. Yes, a slip dress can ‘take you from day to night’ and ‘be dressed up or down’ immediately after it’s just been ‘thrown on’ - that’s the magic of them, they’re fundamentally easy. You could feasibly leave the house in nothing but a slip dress and shoes without causing immediate concern. Attempting to leave the house in nothing but a white T-shirt and shoes, however, would be a different matter.
Another thing for us to think about is just how flattering slip dresses are. This might have something to do with them often being cut on the bias (giving the fabric more stretch to contour the shape of the body) or the fact that there are enough slip dresses in existence to cater to ‘everyone’ - that includes you, doesn't it?