I am large chested and try to make sure I am covered. Sometimes my cleavage is apparent and I try not to do the cover up but when the guy is staring for more than a glance you get uncomfortable. You have to try and cover up. Woman don;t mind you looking but when it becomes more than a look it gets uncomfortable. It would be like if a woman was staring at your crotch, you would feel the need to check to make sure your zipper was up.
Ladyroberts