Since I have had various job interviews where I have been subjected to questions from a panel of 4-10 people (yes, 10), wearing a polished outfit..that you know complements oneself, BUT you didn't have to worry about it during high stress situations. That is the key to an outfit that generates confidence.

So for cold seasons: The outfit is a medium purple wool cashere structured jacket with gold buttons. It is semi-fitted, petite and fits me perfectly. Over a pair of black pants. Shoes are medium purple-maroon loafers or a pair of black vinyl dress pumps.

Hot/warm seasons: A black linen-cotton jacket with stand-up small mandarin collar, buttons over a sky-blue bright solid blue sleeveless top and a black belted wool skirt that hits me just above the knee. Shoes same black shoes described above or black sling-back low dress pumps.

Makeup is minimal. I think too much makeup for a woman my age at job interviews would make me looked dated.

These are high stress situations. I wore one of the outfits last year at a job interview which was a full day of meetings, that included 1 hr. required presentation and questions/answers from audience of 20 people which were other colleagues...your most critical audience.

For the purple outfit I have been in 2 different videoconference calls for remote-site driven job interviews.

So I tend to think somthing simple, structure, classic but with an accent of jazz/strong colour snap somewhere is helpful to build confidence but also not knowing who you will meet and their tastes.
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