A crisp white blouse is a must in any wardrobe. They can be worn year round, and worn many different ways, but look especially chic in the warmer months when paired with the right separates — my favorite duo being black cropped trousers (or tailored shorts) and a minimal black leather sandal. It's chic, it's comfortable, and it can be worn in practically any time zone.
When it comes to tops, I've always loved unusual silhouettes (a strong cuff, balloon sleeves, oversized fit, etc.), so when investing in a smart white blouse I always look for clean lines and modern cuts with some interest. Like this (or this) white poplin blouse by Protagonist which can be dressed up or down, and is perfect for summer days when you still want to look representative. To get a similar look, I also love this affordable option from Zara.