Is it normal to not know what you look like?

Even though I spend a lot of time and energy on my appearance, I don't know what I look like. I used to be a lot heavier and I lost a lot of weight and I had trouble figuring out if I was "average" or skinny or still fat, and people always told me I was too skinny but I couldn't discern in the mirror what I actually looked like; I didn't think I looked fat, I literally had no idea what I looked like at all.

I spend an inordinate amount of time on makeup, skincare, clothes, and dieting and I don't feel negatively about my appearance or anything, but I don't have a clue what my appearance even is! I stare at myself all day and I don't know what I look like!

I feel like this might be some kind of body dysmorphia minus the negative feelings, but does anyone else feel this way?