I know that a lot of people just like to go for a pair of cheap and comfy flip flops in the summer, but I'm more into wedges. They're more comfortable than conventional heels, but still stylish (especially in comparison to flip flops). They also go well with anything and give your legs a touch of femininity.
I'm especially partial to the cute retro slingback wedges they're selling in the Buckle online shop. My eyes sparkle when I see all those lovely patterns and colors!
This is just a preview (click on the image for a bigger view), and for all the styles, head over to the shop.