When you decide your style, if very important to communicate to our guest, which type of style you prefer. Here some advices:
It is generally accepted that "black tie" requires formal attire. Take advantage of this opportunity to truly look and feel your very best in a tuxedo. Today, "black tie" means formal attire, not specifically to wear a black tie.
White Tie or Full-Dress
You can step into the glittering special occasion looking dashing and proper in a traditional tailcoat. Wear a white wing collar shirt, white pique vest, white tie, and black trousers accented by the formal satin stripe. Complete the outfit with patent shoes.
Black Tie Preferred
Indicates the host prefers guests to wear formal evening attire to the special occasion. Black tuxedo, white dinner jacket (mid-April through Labor Day) or a dark contemporary-style tuxedo are acceptable (no tailcoats). Non-formal dress suits are also acceptable, but not preferred by the host.
Black Tie Optional
This option is not as strong a statement for formal attire as "black tie" or "black tie preferred," yet formal dress is wholly appropriate and acceptable. Styles may include black tuxedo, white dinner jacket (mid- April through Labor Day) or a dark contemporary style tuxedo (no tailcoats).
Black Tie Invited
This is a phrase appearing more frequently than "preferred" or "optional." It is usually in the context of large gatherings of civic or business groups, such as a dinner sponsored by the Chamber of Commerce. It states that gentlemen attending are welcome to dress in formal attire if they would like, but it is not required. Styles for these occasions are the same as for "black tie optional."
In strict and very proper social circles, "semi-formal" means "black tie." However, today, if a host wants his guests to wear black tuxedos, he will generally use the phrase "black tie event." "Semi-formal" allows any style of tuxedo or dinner jacket. This is where knowledge of your local community, common sense and good taste come into play. For example, it would be more appropriate to dress formally if the invitation were to a dinner party at the local country club than if it were to a dance celebrating a local college football victory. As a general rule, if a lady wears a floor-length gown, it is appropriate for her partner to wear formal attire. If you are ever unsure about how to dress, call the host or hostess for guidance in dressing for the special occasion.