Men of Lemmy, how old were you when you found out that bra cup sizes are not standardized in the slightest?
It's so bad that my fiancée has some bras that say she's a B cup and others that says she's a D cup. In order to go bra shopping, you have to actually try them on to find out if they fit.
If I had to try on underwear to see if they fit, I might not bother with underwear at all!
When I was 25, my girlfriend complained about buying the same bra, same size, same material, same URL, from the same company, on their website, 2 years apart. The first ones fit really well, the second ones didn't fit at all.
Meanwhile, there's a shoe that I buy a pair of every few years. They release a new "version" about once per year, but the fit has been consistent, so I'm over a decade, and 6 pairs, into my purchase of them, with no problems.
It's wild to me that people just buy the same shoe over and over. I'm not a fashionista by any stretch of the imagination; I just have one, maximum two, pair(s) of footwear per temperature slice, and I don't even have any formal ones.
But even I would want something new, even if my old pair had served me well.
It used to be that any DC skating shoe size 12 for me. Could just pick a model and leave the store. Then they became a fashion brand rather than a skateboard brand and suddenly it was made for tiny model feet.
A got older with an older body I just get the Bondi8 for summer and Kaha for winter as HOKA does wide and quarter sizes.