I love to wear white shirts. I don’t however want to have my bra straps showing through the sheer white shirt. Many times a camisole is needed in order to be modest, but you might try this tip for thicker t-shirts and blouses.
Instead of wearing the typical white bra under the white shirt, put on a nude colored bra instead. It will blend in with your skin and will actually not show up through some white shirts. I did this recently when I wore this t-shirt:
It worked great! I didn’t have to wear a camisole under it and you couldn’t see through it.
The important thing to remember when you grab for a nude colored bra, is that it needs to match your skin tone in order to blend in. That is why white colored bras do not work under white shirts. If you have a darker skin color, then you will need a darker nude color bra.
Obviously this won’t work for every white shirt, there are sheer blouses that are thin enough you will still need a camisole. But it’s worth trying out on a few of your thicker shirts to see if it works for you!