WWAMM FASHIONS- MENS SUITS is your exclusive online mens fashions store. This article was taken from theguidetomenssuits.com.
Church Shirts:
Church shirts can vary depending on your denomination, but I'll make sure I cover the basics. The presence of a church suit usually calls for a button down garment, but not all would agree.
Two Options
1. Wear something traditional with a tie or without a tie. This can have button down collars or open collars - just make sure you button them if you have them.
2. Another option is to wear a polo or tee. Many younger parishioners like to wear clothing with cute slogans.
These could be worn underneath the suit jacket and give the suit a more relaxed look and feel to it. Although I'm not a big fan of this look, (why where a suit at all), it probably would be comfortable to some.