I thought you’d be interested to see this - both from a social/historical perspective and from an aesthetic point of view. See attached.
This is from a Freemans (UK) catalogue in the mid-80s. I had some of these items (I was a teenager at the time). Look at the size availability; nothing beyond a so-called “DD” cup.
I say “so-called” because this was relying on the +4 sizing method, so you often ended up with a bra that the back band was too tight/too loose on, or you were relying on the shoulder straps to hold your boobs up. I recall my boobs bouncing all over the place in those days.
Still, some of the items are pretty (and, reasonably well-made underwired bras). Gossard still make really terrific bras and other lingerie - I don’t think Kayser exists though (I don’t recall ever buying their stuff). I tended to purchase Gossard, Lovable, Warners, Fantasie and the odd Playtex item (when they started doing “younger” stuff). Sometimes Lejaby, and, of course Marks and Spencer.