26. The Striped Sweater — Nautical stripes just happen to be our go-to warm-weather top: They're fresh and clean looking but still add a little variety to any outfit. We're steering clear of the St. Tropez, blue-and-white version and slipping on some horizontals in grays and blacks for a more urban experience.

American Apparel Knit Small Stripe Sweater Crew Neck, $31, available at American Apparel; rag & bone Sierra Crew, $275, available at rag & bone.