Men's sky blue shirt Stiff collar, long buttoned sleeves Thin-striped print, SLIM fit Button fastening, IKKS button on left cuff Styling Advice: With raw jeans, a suit, on its own or with a jacket, nothing can upset the striking style of a sky blue shirt with fine stripes. Forget your doubts. Go for a sky blue, thin-striped shirt, classic and stylish. A safe bet, a signature.