c'est une noce
It should be Bridesmaids' because since bridesmaids already ends with an s all you have to do is make it possessive by adding an apostrophe after the s.
Luncheon is a noun.
"Teacher's Luncheon" means that only one teacher could attend. "Teachers' Luncheon" denotes the plural form, i.e. a luncheon for many teachers.
When lunch is served to several people it can be called a luncheon.
It would be unwise to decline an invitation to attend a luncheon with the Queen. In America, plain old baloney is sometimes labelled as luncheon meat. Will you join me for a pleasant luncheon?
The plural form for the noun luncheon is luncheons.
There are two subjects here, and so the verb is plural: invite.
A luncheon is just a fancy lunch, usually with guests.I can give you several sentences.The Ladies' Association held a luncheon at the church.I am going to the group luncheon because they are having a speaker talk about his travels to Egypt.Let's have a luncheon and charge a fee so we can raise money for the band!
I will be going to a business luncheon tomorrow with our new clients.
Luncheon on the Grass
Luncheon of the Boating Party was created in 1881.