Summer Workwear OOTD

I know we seem to be through our peak June heatwave but I took these photos when it was super duper hot and I wanted to share them in case we (by some miracle) get another heat wave!
Basically, I work in a corporate environment which means the recent highs of 32 degrees has been really tricky to dress in a way which is office appropriate but not ridiculously hot. 

I've really liked this dress when it's been warm because it's such a lightweight material and a loose, comfortable shape.  Although it's slightly shorter in the front than what I would usually wear to work because it's so long in the back I think it's still conservative enough.  

What's your go-to work outfits when it heats up?