About why, in fact, the jacket has become elongated, and the shoulders are square, says OK-MAGAZINE.ru.

Military
Elongated loose jackets, similar to men's jackets, are perhaps the main thing that wartime brought to the women's wardrobe. Their length, women most often compensated for the shortness of the skirts. Jackets and dresses were often supplemented with army details - belts, buckles, epaulettes, patch pockets. They also say that square hangers are also an invention from the men's wardrobe. However, there is a more mundane explanation for this trend - lined hangers were sewn to make the waist appear slimmer.
Press service archives
Turban
No matter how festive women tried to look during the war years, no one canceled everyday difficulties. Some, for example, simply did not have the opportunity to wash their hair on schedule, so they hid their dirty hair under scarves tied like a turban.
Many skirts
Skirts-sun, as well as pleated and pleated models (and no, they are not the same!) Women wore with elongated jackets. The latter, by the way, were often worn over dresses.
Photo: Legion-Media
Pants
The shortage of hosiery made of nylon pushed women to borrow the main element of the men's wardrobe. And so that the figure did not look shapeless, the jacket, in addition to the trousers, was always fitted, and its shoulders were square (you already know why).
Photo: Legion-Media
Long collars
What in 2017 we call a plunging neckline was then considered a regular lengthening of the collar. But thanks to the neat cut, the dresses and blouses did not look provocative, but very elegant.
Press service archives
Cap and kimono sleeves
Short winged sleeves were usually sewn on summer dresses and the silhouettes turned out to be flying. But the kimono sleeve, which at that time was called "bat", was necessarily supplemented with linings to maintain its shape.
Press service archives
Large pockets
The practical design solution was also borrowed from the men's wardrobe. The trend for maxi pockets, by the way, returned to us this season.
Parasailing dresses
The first to think of this were French and German women. Finding that parachute silk lends itself well to redrawing, they began to collect the fallen parachutes and transform them into elegant evening dresses.