There are bras you wear for support, then there are bras you wear for style. This Alexander Wang Triangle Bra ($65), clearly the latter, would look cool underneath a sheer tee. It totally feeds into the sporty-sexy bra trend, but one minor problem: I refuse to pay $65 for a bra, especially when there is a look for less out there.
To see a less expensive triangle bra, read more.
I went ahead and got myself this American Apparel Triangle Bra for $10. Not only is the price fair, it gives the same sporty-sexy feel. Throw it on underneath a full-on sheer tee if you dare, a burnout tank if you're shy, or even a lace top for a less obvious peek-a-boo.