-dress may only have 2 pockets
-No metal or leather buttons
-No boys under 13 could wear long trousers
-All embroidery and lace were banned
-Jackets and coats could hove only 3 pockets
-No double breasted Jackets and coats
-Trousers could not be cuffed
-No shirring, rushing, boning or fancy stitching was allowed
a 1940's 'Utility dress'
So considering that all, you might want to respect the 1940's women for keeping a sense of style and grace under these conditions. And it made the way for later generations to start wearing more practical clothing.
Everything was influenced by the war. Not in the least music was. To keep up moral for the men at the front.
This song by Gene Krupa and Anita O'Day is a fine example.