Society tells us that youth is beautiful, but I look at photos of myself at 18 and think I looked a total state! No idea about how to dress, skincare, and I still had the puppy fat.
Maybe I'm deluded, but I think I started to look my best from my very late 20s (in early 30s now), but maybe that's due to lots of things - being healthier, exercising more, better fashion, taking care of my skin etc.