Sure it can ruin your own look, even the same shape and size of the bag in different colour and texture. I have YSL medium downtown in lambskin, soft - nice colours - degrade - brown, purple stc...and it looks fabulous on me, slouchy and leans well against the body, I look terrific with it. Knowing that, I bought the same bag, same size, but black patent ...it swallowed me totally. It is more keeping shape, rigid and it is abvious how big it is. I had to return it, I almost cried because YSL patent is timeless, amazing textured and forever durable. I had to return my absolute only rain bag, just because I lloked rediculous with it.