The art of the Black Blazer is simple: Pair it with almost anything and it creates a polished and professional look.
Today, for example, I'm wearing my "safety pants"--you know that pair you have in your closet for when you have no idea what else to wear, never requires ironing, is easily thrown on with a pair of comfortable heels, and is a nice neutral color?--and a simple soft pink detailed tee shirt (untucked).
If I take the blazer off, I look like I schlumped it out of bed this morning, barely had time to do my hair, and had to finish putting my eye make up on at work (which may or may not be a true story, depending on which of my co-worker's you ask). But with the jacket on...ahhh...I look like I'm ready for the day.
Doesn't a black blazer and a pair of heels just make you stand up straighter?