Dressing classy requires a bit of modesty — no midriff-baring tops, revealing low décolletage, or mini skirts.

Necklines are typically collared, boatneck, crew neck or V-neck. For some variety, you can also try square, cowl, and scoop necks. For more formal occasions, asymmetrical, sweetheart and halter necklines work as well. Regardless, keep your cleavage and your belly button covered. Additionally, armholes on blouses and dresses should not reveal your bra.

As noted above, hem length on skirts and dresses should be just above or below the knee for everyday wear, with slightly shorter and full-length appropriate for summer events or classic formal wear.

Here is a classy and professional outfit example that I would wear to a professional event or to the office. And this is a very elegant and classy outfit I wore to a black tie event. Those two outfits are examples that you can look stylish and sexy without showing too much skin.