Never. Only wear a button-down collar with a sports jacket, and no tie.
This is controversial. Button down collars are not considered appropriate with suits in the UK, but in the US, particularly in New England, they are considered a classic choice.
A button down shirt is a sports shirt and should not be worn with a suit and tie. The button down collar was originally developed for use in Polo matches to keep the collar from flipping up against the rider's cheeks and face. It came to be used on some other sports shirts as a style, but should never be worn with a tie. Wearing a tie with one simply demonstrates lack of knowledge of proper men's dress. Of course, it's each individual's right to dress as they wish. However, men who actually know something about style, cut of clothing, (such as modern suit jackets being cut in a way that the bottom button should not be done up, but simply used as decoration) will be smiling inside when they see that someone doesn't know how to properly dress. But don't worry, we will stay polite and not say anything. :)
Should always dress professionally. For most white collar office jobs, should wear a business suit.
They usually wear robes when they are leading services. Most wear a suit and sometimes a collar when not in the pulpit.
An informal attire is relatively formal than the casual attire but less formal than semi formal. You can wear a trouser with a matching jacket and an open collar shirt as a suit for informal wear.
If you want to wear a mandarin collared suit without looking like a priest, you will have to remove the collar.
You could wear a dark blue or black suit to a 5pm wedding. You could also just wear nice pants with a collar shirt.
A priest does not have to wear his servant collar when relaxing or on vacation, on days off, etc., but should always wear it otherwise
You should not wear a bathing suit i would wear Jeans shoes and a hollister t-shirt
collars are optional.
Blue collar workers are laborers, especially factory workers. White collar workers are those who usually work in an office. The title of blue collar comes from the type of uniform that many laborers wear. The title of white collar comes from the type of linen shirt that is typically worn with a suit.
Just wear a swiming suit
One should wear A and E collar shirt to a 7th grade dance.
What you should wear will depend on where you are going. If you are going to the beach, a bathing suit is appropriate. However, if you are going to a formal even with the President, A suit and tie or a dress is what you should wear.