Some of us look beautiful with a ton of detail; some of us look beautiful in a minimalist context; and some of us can pull off both high-detail and low-detail looks.
But what does "amount of detail" actually mean?
The best way I have come up to explain "amount of detail" is this: Imagine that your image in the mirror is a pencil sketch. "Amount of detail" is the number of pencil strokes you'd need in order to accurately render that sketch.
A flat piece of fabric is extremely low-detail. As soon as you gather that fabric into pleats or drapes or ruching, the image becomes much more detailed. Not coincidentally, pleats, draping, and ruching read as feminine.
Detail always reads as feminine. I have a couple of theories about why this might be. One idea is that we view detail as feminine because detail holds the eye, and throughout history we have seen women, not men, as the sex that exists to be looked at. Another idea is that we associate detail with femaleness because a curving line is "busier" (more detailed) than a straight line, and the lines of female bodies, on average, curve more than the lines of male bodies. A third idea is that we associated a highly detailed ensemble with femininity because creating a highly detailed ensemble takes time and effort, and women, not men, are traditionally expected to put time and effort into their appearance.
Regardless of why it's so, a high level of detail adds femininity, and minimalism adds masculinity. Women whose style types are mostly androgynous/masculine will usually find that too much detail makes them look mannish. Women whose style types are mostly feminine will usually find they are less pretty in minimalist looks.
I'm an Ethereal Natural with tiny smidges of a few other essences. My feminine-masculine balance is about 60-40 in favor of feminine elements. If my fabrics are rough and my colors are restrained, I can handle quite a bit of detail, but if my fabrics and colors are already very feminine, I can easily get overwhelmed with detail, and end up looking mannish. My curly hair by itself adds a ton of detail (imagine making a pencil sketch of it!), so if I'm wearing my hair down I don't have a lot of room to add more detail. Most of my garment choices are pretty simple.
This sharply tailored suit could be drawn with very few pencil strokes. It's low-detail.
Jennifer Aniston is another celebrity who looks her best in very low-detail looks. She has a ton of Natural (which, along with Dramatic, is a masculine style type that asks for very little detail.)
Most off-the-rack fast fashion is low in detail. If you're a predominantly feminine style blend, shop for items with more detail built in, like pleats, complicated lapels, visible stitching, and a sheeny finish (which adds visual detail as a result of the play of reflected light.) If your clothes are simple and you need to add detail, the easiest way to go is to add highly detailed accessories: for example, profusely detailed earrings, necklace, and scarf.