Tina, from the awesome blog what-i-found, is doing an amazing series of photographic posts from a vintage fashion book called Clothes for You, which was a "guide for the young woman who wishes to be well-dressed."
This book was first published in 1947, and then updated in 1954, which is the edition Tina is posting photos from. Just two years after the publication of Vogue's New Book for Better Sewing! The outfit featured above is described as "an afternoon suit with its soft dressmaker touches that may be worn for after-five affairs when you wish to keep your outfit simple but in good taste." (Afternoon suit? After-five affairs? I think this is directly related to our earlier discussion about "overdressing.")
My favorite is this versatile ensemble, which is a strapless dress for evening, but can be transformed into a day dress with the addition of a smart little jacket. (And, apparently, a . . . bonnet?)
what-i-found is a fabulous blog with tons of "vintage sewing and fashion ephemera." Be sure to go check it out! Tina also has an online shop with lots of vintage patterns, like the darling one below.
P.S. If you're interested in buying a copy of Clothes for You, there's one on Alibris right now for $35.