Flannel Frenzy: BP. Boyfriend Plaid Flannel Button-Up Shirt In case you didn't get the memo, fall is basically synonymous with flannel shirts. While this BP. Boyfriend Plaid Flannel Button-Up Shirt ($49) comes in a bunch of cool colours, the light pink hue will be a welcomed addition to your rotation. Image Source: nordstrom.com BP. Boyfriend Plaid Flannel Button-Up Shirt $49 from nordstrom.com Buy Now