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!
Men’s clothing sizes are a little dumb sometimes but I can usually take a tape measure to my waist and correctly order pants. Your guess is as good as mine what the difference between “boot cut” and “relaxed fit” are, and I would swear T-shirt sizes have shrunk since I was a teenager. As in, I can compare a Medium I’ve had since the Dubya administration to an XL today. But getting fitted for a suit, they measure me in inches and the clothing is more or less sized in inches.
Women’s clothing sizes have had two different ice pick lobotomies. Women come in a wider range of sizes and aspect ratios, women’s clothing is pretty much universally designed to fit tighter, but on the rack they’re given one meaningless size number. a 12 is bigger than a 10, who knows by how much, and there’s nothing on the girl you can measure with a tape to get that number, and there is no standard here at all. Why they haven’t revolted I have no idea.
There is a whole NPR episode on women sizing and history of sizing in general.
Eye opening how stupid it is
Boot cut is tighter around the hips and thighs, has a slightly flared leg (think bell bottoms but way smaller flare). Relaxed is straight leg, but not so tight as to be skinny jeans. I generally wear boot cut, but my boots are only ankle high so it’s not like I need the extra leg room. I just like the way they look on me.