Fix The Layer, Not The Wardrobe
The standard fix is to build a wardrobe around concealment — darker colors, looser cuts, a flannel over the tee, a jacket you keep on indoors. It works, and it costs you every warm month of the year. A structured base layer inverts that math. One garment does the holding, and the closet you already own goes back into rotation. Fitted shirts. Light colors. Short sleeves in August.
You bought those shirts for a reason. Wear them.