Why do you think some women look younger?

For a woman in her 20s to look 12-15; I have theories.

Either she's very short and thin, or she has a strangly shaped face, lots of facial fat, or acne that we typically equate with the awkwardness of puberty.

Just my theories, though of course there are some women who simply have not grown likely due to hormonal disorders, but I find those to be much more uncommon.

Why do you think some women look younger?
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