While I think Condoleeza Rice was a fantastic example of appropriate but stylish dressing for high office, I think Kamala is right playing it safe. It shouldn't be but any woman is at a disadvantage to a man in this game and at least she is avoiding the ill fitting, too colourful horrors that Hillary Clinton wore during her Presidential campaign.
I think they all, men and women, end up in a sort of uniform really. It must be like armour, whether Thatch with her neat suits and pussy bows or dark trouser suits (both sexes)