A few months ago I got to borrow this World War II Womens Army Auxiliary Corps (WAAC and later WAC) uniform with matching garrison cap from a local historical society.

A little bit of history about this version of the WAC uniform that I found online:

Due to harsh criticism of unsatisfactory fitting and material of the first WAAC uniforms many revisions had to be made. 
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A new jacket was developed, with a better-fitting prolonged upper collar. The bulky breast pockets that caused unwanted fullness of the bust were replaced by simulated pockets with buttoned flaps. 
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Because of the prolonged collar other parts of the jacket automatically were set lower: the breast pockets, the button closure and the slit pockets. The whole jacket was a little bit longer now as well. Unfortunately, the bottom button was set too low so that one had to unbutton the jacket for comfortable sitting.
Another problem was that the new jackets were tailored by men’s garment contractors and therefore became too stiff and appeared awkward. 
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The skirt pattern was also revised. The previous straightcut of the gores caused wrinkling and rolling of the skirt. Therefore the new skrirt was rounded at the hips to fit better to the actual female figure.

This WAC uniform was almost in new condition and still had ironing seams! The army dress shirt may or may not have gone with it, because it was disproportionately huge.

I’ve previously posted these on my main photography site.