Not inane Chris!
Brocade's in for spring/summer too, Linda? Better get paradin'...
Now I don't have the precise cultural background to <b>'Model'</b> 'cos I haven't formally studied fashion history, but I can give you an idea:
It's a very common term to find on British labels of the 30s-50s, but was in use with reference to clothing earlier than that.
You also get <i>'Modéle'</i> on French labels, from which the English fashion usage may have been most directly derived.
(Which is why I assumed this Chavent label is ultimately English, Chris, it's not the French spelling - although that's not ruling out that the place's founder might have been French, hence the name).
Debenhams advertises their 'Model Gown Department' in the 30s. I don't know for certain the precise derivation (but see the OED definition, below), but I'm thinking it carries implications of being an original creation to be copied, along with shades of 'the newest thing'.
Hence, the contemporary US label usage parallel might be all those many 'Originals' labels, of which many fell away after the 40s.
During the mid-late 50s, many of the British firms moved away from that 'model' terminology, for some reason. By that time, 'a London Town model, created by London Town' became 'London Town, Made in Mayfair'. 'Carnegie Models' of the 50s variety can be found, whereas yer c.1959-1960s gowns are labelled 'Carnegie of London'. Similarly with 'Binnie Model'-->'Binnie, London'.
I suppose the overall context must have been that 'Model' had become an archaic and non-cutting edge term. It's possible that such wide brand-name usage of a once-prestigious term just sapped it of its meaning too.
Also, I'm aware that copyright assertion over designs in fashion stepped up in a big way during the 50s and 60s - I wonder when all those 50s Vogue spreads saying 'Suzy Perette copying a design by Balenciaga' had to stop..? So I'm totally guessing that the 'Original/Copy' assertion may have become less relevant - so why call your gown a 'model'?
Woah. Went on a bit. Sorry!
Hope this helps!
L
OED definition - 'Model' - implying that this usage <i>does</i> originate in Parisian terminology. The first citation might be American, the others are British. Only one later citation (1975, with a different meaning) is included in the OED entry.
Note that all the citations use the word with the meaning 'new, original, authentic' ie. imports or new designs, not our versions of them...
d.<u> An article of clothing of a particular style, which is produced for show by a designer, or fashionable in a particular season, etc.</u> <i>
<b>1859</b> Southern Lit. Messenger Jan. 14/2 A quarter of a yard longer at the bottom, and as much shorter at the top, than the Parisian models.
<b>1880</b> Queen 12 June (advt.) Messrs Jay import from the first houses in Paris. Models of every style.
<b>1906</b> Bazaar, Exchange & Mart Suppl. 3 Oct. 1308/1 Great bargains in ladies' wearing apparel, new and equal to new. Paris models.
<b>1933</b> N. COWARD Design for Living I. 22 A silly pride made me..parade my attraction for you, like a mannequin [ie. a live model, not plastic - ed]. New spring model, with a few extra flounces!
ps. we've got the London Town Model label for that entry now! It'll give you an idea of the transition.