This will vary a bit depending on whether parents are issuing the invitation or whether the couple are doing so but in general this style is acceptable:
You want to make sure that your wedding follows this traditional theme after your choice of invitations. This is important because it can help you make sure that you are on track for a formal celebration right from the start. Often the more classic and traditional wedding invitations are the best way to show right from the start that you are planning a traditional and formal wedding. If you are not planning a traditional wedding, it is still possible to use this formal invitation. Although it may not match the exact theme of your wedding, the invitations are very simplistic and you are sure to find one that works well.