First, it is necessary to come to a temple decently dressed. This does not mean putting on your finest or most fashionable clothes. Clothes should be neat and tidy. It is not permissible to wear clothing meant for sports, working or the beach.
Clothing should also be modest. A good rule of thumb is that we should be attired such that we can make a full prostration without embarrassment. For men a suit is not required. Shirts should be long sleeve (without any blatant slogans, figures or depictions of pop culture), trousers should be decent (not jeans), and footwear should be ordinary, not athletic style shoes. Shorts are only to be worn by boys less than seven years of age.
For women dresses and blouse should not be sleeveless or too revealing in the front or back. Skirts should be of an appropriate length (not above the knees) and without slits. Footwear should be suitable.
Women should be cautious concerning cosmetics. It is not correct to wear lipstick that will leave stains on icons, the cross or the hand of the priest. This is especially the case when communicating of the Sacred Mysteries and kissing the Holy Chalice. According to Scripture (1 Cor. 11) women should cover their heads in Church. This is an attribute of humility and modest. Unfortunately it is not always observed now. By the same rule, men should not wear hats in church.
One should come to church for the beginning of the Divine services and should not leave early without extreme necessity. During the Divine services one should not move around the temple as this is distracting to others. It is not proper to hold conversations during the service, nor is it proper to greet each other with handshakes and the kissing of womens hands is completely impermissible. To welcome friends in the temple it is appropriate to acknowledge them with a modest inclination of the head silently.