Its a very curious thing, our desire to look as much like one another as we can, now and again. We invest a fair amount of energy into it, and will sometimes go to extremes to achieve it. Of course there is the desire to copy famous folk, or characters from stories or films or television. But in this case, I am addressing our sometime desire to look like each other.
We have all seen, or perhaps been, those who are coupled, and dress alike from time to time. In Hawaii, I saw more than one vacationing family dressed in matching aloha shirts from Hilo Hattie. And we've all witnessed groups of like minded folk who by association seem to dress alike, all wearing versions of the same hair, and clothes.
So first we have a sweet desire of those who are in close relationship to express visually the connection that they share to each other. Sometimes, when it isn't carried to extremes, its really pretty adorable. A young couple who wear similar tee shirts, or an older one that echos pattern in each other's clothes. This can seem charming to us, giving us a colorful cue to the level of their commitment to each other.
Other times, this same thing can exceed the sweet, and get to another level entirely, where we begin to infer negatives connected to the identical nature of the ensembles. The correlation is that the more completely the clothes are copied, the less we feel comfortable in viewing them. We begin to question their rationale, and the real quality of the very loudly stated relationship.