When in doubt, go celestial. Opt for a printed slip dress, like this one by Talula, thrown under a ribbed tee. Finish off the look with some statement hoops, and you're out the door in less than five minutes.
Yes, the Rococo Vans are a statement in and of themselves, but take it up a notch this summer and pair them with bright red shorts. Keep the rest of the look pared down with a classic plain white tee and an understated hat.