Longitude! The Virtues of Vertical Stripes The Directrice After posting about the One Hour Dress, I thought I'd follow up with some design techniques you could use to prevent your version from looking like a hideous sack like my first 40 Best Vertical Line ideas fashion, clothes, style Striking stripes that flatter! Vertical lines create the illusion of length, add definition to the silhouette and bring structure to every outfit. That's why we love the Aura Stripe Print Shirt Dress: Striking stripes that flatter! Vertical lines create the illusion of length, add definition to the silhouette and bring structure to every outfit. That's why we love the Aura Stripe Print Shirt Dress: