Fit for both easy countryside weekends and the city, Johnson's romantic, breezy pieces form the bedrock of the bohemian's wardrobe.   This season it’s about: What the Brooklynite does best: cute blouses (the bow top is back in pink), floral dresses to throw on for date night and denim that's funky enough it requires no more than boots (sub a sandal in summer) and a tee.