Most Helpful Girl
I think it depends more on how memorable the outfit itself is, like how detail-specific. If your style is more plain or monochromatic and you have a lot of basic items that can all be worn interchangeably, I don't think it matters that much. Whereas, say you have a pair of black jeans [but you wear mostly blue ones], a multicolored floral v-neck top with a ruffled hem, a yellow cardigan over it, and a pair of red shoes that tie it all together perfectly... Those details are more likely to be noticed and remembered. Jeans and solid [basic white, black, blue, red] colors are different because a person could have any number of the same color jeans, or tops. It's unlikely that you'd own more than one floral top that specific, or more than one yellow cardigan. So I wouldn't wear all of those elements together again for at least a week, probably closer to two.
That's why when I buy things, I look for a certain amount of basic items, and keep what I already own in mind because I'm imagining outfits and how many different things I can do with the new item. The more I can do with it, the better. And if it's particularly unique, that's where more of the basic things come in, because the new item could go with more than one of the basics.
Personally, I don't like to wear more than two elements of an outfit together again within a week, because I feel like it gets repetitive. So a complete outfit, of the more specific variety I would try to hold off for two weeks if I could. But it also depends on how much your wardrobe consists of, obviously. Some people have tons of clothes and could literally wear a different outfit every day of the month. Some only have a handful of things, like two pairs of jeans, a few pairs of shoes, and half a dozen tops or something, with maybe two jackets/coats. Most of us fall somewhere in between, I think.