Another good option for a plain white button up shirt, good collar structure, oversized boyfriend fit do definitely size down if you want to wear under something. Cotton but a bit more on the see through side, nice and lightweight though so great for warmer weather. Wearing my true size XXL Tall but would say size down for a slimmer fit if you want that. Wrinkles pretty easily but steams quickly, would be great for layering. Nice sleeve length for the tall gals! LTKcurves LTKunder50