I absolutely adore jeans--about 300 days a year. There are sixty or so days, primarily now around July and August, where it is simply too hot outside to wear my favorite fabric. But as this is the season that everyone seems to have embraced all things denim, I have happily found a way to transition my look: the chambray shirt.
I am loving J.Crew's version ($98; jcrew.com), classic tomboy and perfectly rumpled. The look is unfettered, laidback cool, with casual shorts and sequin skirts alike. Bring on the heat.