Etiquette expert Stuart Matlins weighs in on the top ten mistakes for you to avoid when interacting with people from other religious traditions.  Click here for the full list.   Below, a sample helpful hint:

"[W]hen a woman is attending a Muslim service, a dress, or skirt and blouse, is recommended. Clothing should cover the arms, hems should reach below the knees, and a scarf should be worn. For men and women, crosses, stars of David, jewelry with the signs of the zodiac and pendants with the faces or heads of animals or people are discouraged."