Despite constant frustration with my wardrobe, I can usually count on a few basics that can carry me through any situation. This is not the case with the perfect white blouse. I'm looking for something that looks masculine and feminine at the same time - even on a curvier figure. That rules out most "boyfriend" shirts, which end up being too baggy on anyone over an A-cup (tenting). It also rules out highly tailored shirts, which tend to emphasize one's figure in a manner reminiscent of a sexy nurse costume.
The key is a looser fit that nips in a little under the bust, but not enough to cling at the waist. One of these, perhaps?