Well, for the past few centuries we have defined beauty not just as health and youth and symmetry that we're biologically programmed to admire, but also as tall, slender figures, and femininity and white skin.
It's worth noting that these practices, at least as they are depicted on Xiaohongshu, usually uphold a kind of normative femininity constructed by beauty norms and consumerism.
I used to feel like I had to present super butch to be taken seriously as a musician, and now that I'm older, I just feel like I can express my full femininity and still rock a stage.
While some discover a deeper love for themselves or develop a new connection to their femininity, for others these changes can be hard to accept and recover from.