With chunky knits and borrowed-from-the-boys tailoring, it's okay to relax those shoulders in the comfiest silhouettes.   TALENTS: Photographer: Tania Quintanilla Wardrobe: Graham Cumberbatch Hair: Robert L Grimes Makeup: Kelsey James Model: Alencia Lewis from Campbell Agency   Pleated Pant by Studio Nicholson ($386; Kick Pleat). Navy top by Studio Nicholson ($386; Kick Pleat). Turtleneck by Ralph Lauren ($425; Julian...