What you wear should be appropriate, of good quality, and in good taste. Be clean and well groomed. If need be, ask a consultant in a reputable store or from someone whose clothes and styles are indicative of good dressing. 

Don�t slavishly follow the latest fashion trends. You may emulate upper management with good tone of dress. If the organization you are working in, has a dress code, stick it. Consider how much you are going to invest. Buy quality clothes. Don�t buy heavy ones that last a decade. Consider the type of work you do and the style of the organization you work for. 

The fabric you buy may be good in style, but remember, the fit is more important. See the style and colour. Check whether it is right for your shape and size, your skin tone, and hair. 

Quality is more important than quantity. Avoid buying sexually appealing or glamorous clothes. 

Dress sense : Men 

      1.   After you have finished eating, clean your teeth. You feel better and fresh. 

      2.   Bathe or shower daily. Use deodorant, mouthwash, and a foot deodorant. 

      3.   Have your hair well-cut, washed, and well groomed. Outdated haircuts and styles, grease and excessive hair spray are not good etiquette. Keep your nails manicured and clean. 

      4.   Have clothes laundered, pressed and dry-cleaned. Check that there are no stains on your clothes as they are offensive to the eyes. Sew on loose buttons. 

      5.   Have your shoes polished and in good repair. Don�t let heels run down. 

      6.   Take care to use only good quality fine perfume, cologne, and after-shave. 

      7.   Replace frayed watchbands. 

      8.   Keep your briefcase wellpolished and in good repair replace it when necessary. Do not put decals on your briefcase. Regularly clear out the lint and bits of paper. 

      9.   Maintain a good relationship with your doctor and dentist. Stained, decaying or missing teeth can be very offensive. 

      10. Stay home when you are ill. It is poor manners to share germs or to expect sympathy for any illness. 

      11. Don�t discuss operations or medical procedures in the office. 

      12. If you have some health problem that requires medication or monitoring, the people you work with should be aware of it and know what to do in case of emergency. 

      13. Dress smart, dress well. Avoid overly tight pants, flashy jewellery, and watches. 

      14. Some companies want no facial hair whatever. Keep moustache and beard clean and trimmed. 

      15. Hair on the ears and nostrils is offensive. 

      16. Put on fresh and clean under wears. 

      17. Have an emergency kit that includes toothpaste and toothbrush, comb, lint brush, nail file and clippers, a fresh shirt and a tie, razor, deodorant, and shoe buffer. 

      18. Use handkerchiefs, not small tissues. 

      19. Wear executive length socks so that no hair-shank is exposed when you cross your legs. 

Dress sense: Women 

      1.  Dress decently. No mini skirts, no low-cut blouses or bursting buttons, no tight clothing and no flashy jewellery. 

      2.  Have nails fairly short. False nails are associated with performers in entertainment. Underclothing should not be visible and always be near neat and clean. 

      3.  Wear make-up that is fresh and moderate. Don�t wear false eyelashes. 

      4.  Keep an emergency kit that includes sewing necessities, toothbrush and toothpaste, nail polish and emery board, light brush, comb and mirror, hair spray, deodorant, tampons and shoe buffer. 

      5.  Wear Sari or Suit with no wrinkles or bulges. 

      6.   Never wear clothing made of fabrics like velvet, stain, brocade, or sequins to the office. 

      7.   Never wear casuals like jeans, or bandan fabrics to the office. 

      8.   Think twice about changing the colour of your hair. It�s confusing for associates, and can label you as indecisive or flamboyant. 

      9.   Always blot lipstick after application. Leaving a red impression on glasses and cups is very poor etiquette. 

      10. Wear jewellery in moderation. No jangling or clanging bracelets. 

      11. Wear well-made quality shoes with a low or medium heel. Avoid sandals and �fussy� shoes for business. 

      12. Make constant wardrobe checks for frayed blouses and sarees. Replace them when necessary. 

Never put your handbag on a desk, boardroom table, or restaurant table. Consider investing in a briefcase that incorporates a purse within its design.

Source - Mystic India