Flats seem stuffy to me. If you must, wear them in a bright color.
Sneakers or Toms are great for the summer hikes, or when you are traipsing through fields to find the perfect stargazing spot.
Gladiators are clearly the superior option for summer. Classier than your basic flip-flop but still light and easy.
Anything open-toed. Paint your toes something bright and let them shine.
NeverI have said this before and I'm going to say it again and I refuse to apologize.
IF IT IS TOO HOT TO WEAR PANTS IT IS TOO HOT TO WEAR BOOTS.
Why? Why do you do this? How sweaty are your feet? Were you anticipating a stampede that would require your expert cowgirl knowledge?
Oh you're just a slut? Ok. Great. Don't snag your nasty belly button ring on your torn apart Daisy Dukes.