It's been very mild here and summer tee shirts are already being worn. I do need to be discretely brassiered under a tee shirt!
Most of the time I have no option than to be underdressed, but I really do need the support of a bra, due to my breast expansion and pumping activities. I'm heavy, but also very nipply, so I need lift and cover.
I have been experimenting with androgynous tops and tee shirt bras. The tops are in dark colors, often with stripes to break up any bra strap lines. I have purchased front fastening bras in nude and black.
There are two issues here. One is the bra strap being visible, which seems to be minimised by a dark or nude bra color.
The second issue, namely the bra clasp and strap buckles showing through, is more difficult. Using front fastening means no unsightly rear band fastener, but the bra is effectively non-adjustable. These bras have the strap adjustment buckles close to the bra band, instead of being on the shoulder, which helps concealment.
I went shopping yesterday, and I couldn't help showing a bit of boob. When I reached to the shelves, I am sure my bra buckles poked out, but the bra itself was not visible. I am on the cusp of being exposed as a bra wearer!