What you need to know this instant.   Which Denim Jacket Is
Better: Proenza Schouler vs. J.Crew  By now I've lost track of
why most people are wearing denim jackets: to coat a sundress in
Taylor Swift-y, twangy charm, to tame a sparkly pencil skirt in
a high-low Jenna Lyons way or to echo the Americana swagger of
varsity sweaters and camouflage pants a la Rihanna.  But while I
don't know which incentive is the winning one, I do know that
it's a victory for jean jackets overall. This summer I've seen
more of those things than I did at the Montana dude ranch I
visited in 1994.  And I'm part of the picture, thanks to the
pool-water blue Ralph Lauren Kids jacket my parents bought me
for that Montana trip eighteen years ago. Between the perfectly
cropped fit I can only find in other things pilfered from kids
lines (bracelet length sleeves, slim fit torso) and the smug-
yet-inevitable way my lips curl when telling someone it's a
legitimate '90s relic—like a Spice Girls lollipop or a snap
bracelet—I fell in love with