The outfit of choice: white linen. I have worn this sleveless blouse many times this Summer and will continue to wear until the weather dictates the need for sleeves.
The thing about white is that it can be paired or worn with any color.
For footwear, no contest to sandals. In my case, if it's leather the better. Though sometimes, I wear running shoes for comfort.
These pairs are from Freak's Store, a lifetsyle store in Japan. (I should post about lifestyle stores here considering their prevalence). It so happened they were on sale at 20% off so knowing me, if I like the design, I should have them in at least two colors. They are leather, not Italian made but very comfortable. My feet were blister-free after first use.