Herringbone is great and it’s everywhere this Winter. Shopping over the weekend, I saw it on clothes and furnishings. It's a pattern I normally associate with men but it looks great on women for formal wear. I bought the jacket above in grey as that’s the most versatile for my wardrobe. I do hope it will come down in price though and I will buy it in some more adventurous shades like blue and green.
To wear a jacket modestly either pair it with a long knit with loose wide-leg trousers or wear it with a maxi skirt.