H&M blue and white plaid button-up shirt in a S #plaid #preppy Brand & Style: H&M Divided flannel, H&M plaid shirt, womens plaid button down, blue plaid top. Aesthetics & Details: Light blue plaid, white grid pattern, chest pocket, long sleeve button up, soft lightweight cotton. Occasion / Style Vibe: Casual everyday, fall layering, soft girl aesthetic, preppy, relaxed fit.