And there is one particular item that'll bring you up to date... before you start searching for a fetching conical hat!
It ticks all the boxes for me- upper arm coverage but still pretty and cool. A light kimono jacket could not be hotter right now, and it works for evening or day.
Just sling it over a LBD and pile on some quirky jewellery and pair with towering wedges for a stylish but nonchalant evening look, or just shrug it on over a vest and jeans for a nod to next season.