Good etiquette for hosting bridal showers includes following the bride's wishes, avoiding duplicating guest lists from other showers and providing gift registry information. Mailing invitations and hosting the shower within two months of the wedding are also important etiquette rules to follow.
The bride's desires should be kept in mind when planning a shower. If she wants a laid-back couple's shower, the host should provide that. If she would rather have a formal high tea, the host should work to accommodate her wishes. Everything from dates to themes to colors should be in line with what the bride wants. Plan the shower anywhere from two months to two weeks prior to the wedding on a date agreeable to the bride.
When planning the guest list, avoid inviting people already attending another shower. The exception to this rule is immediate family of the bride and members of the bridal party. Everyone on the guest list for the shower must be invited to the wedding. Only coworkers who choose to host and attend an office shower are not required to be on the wedding guest list.
It is acceptable to provide gift registry information prior to bridal showers. People understand that gifts are expected at bridal showers, so mentioning gifts is not considered a breach of etiquette. Do not list registry information on the mailed shower invitation, but those details can be enclosed with the invitation, listed on the couple's wedding website or passed along by word of mouth.