The way you dress affects how others view you. It's nothing personal, just business.

Dressing too sexy can also have psychological effects on your peers, according to Peter Glick, a professor of psychology at Lawrence University in Wisconsin. A study by Glick that was published in Psychology of Women Quarterly indicates that women in high-level positions who dress in what is seen as sexy attire are viewed as less competent--regardless of their skill sets. These women are passed over for promotions more often than their more modestly dresses female colleagues.

So if you want to get ahead in the workplace, better rethink that low-cut top.

The Unspoken Rules

If you're confused about what is appropriate, you aren't alone, says Barbara Pachter, an etiquette expert who advises companies like Pfizer and Microsoft, noting that a surprising number of executive women admit to not knowing what styles suit their bodies.

Even politicians and celebrities have to polish their looks in the hopes of furthering their careers. Hillary Clinton is a prime example. More than once she has revamped her look and wardrobe--sometimes criticized as too severe and masculine--to include more traditionally feminine touches, like pastel suits, in an effort to emphasize her role as a wife and mother and relate more to the voting public.

Assess Your Work Environment

Even if your position doesn't require you to see outside clients, you are still "making an impression on your boss [and] your potential future boss," While women may have more options about what to wear in the workplace, they also have more room for misstep, notes psychology professor Glick. "What's a man going to wear, a pair of Dockers and a button-down shirt, as opposed to a tie and a shirt?" Pit that scenario against a woman whose maxi dress is semi-transparent and, well, the impact on their respective reputations hardly compares.