I finally took an invitation to the post office to get it weighed and bought the stamps. They need 64 cent stamps and they had really pretty ones with wedding cakes on them, then I got the 44 cent ones called "wedding roses" on them for the RSVP's to be sent back. It's a small check, but yay for it being done!
Re: Check
Married!
My daughter's invitations needed $1.08 postage, so those are the two we chose because they went pretty well together. I think it was the wedding roses that was released only a few days before we needed to mail invites, and I was worried we wouldn't be able to find them in the local post offices yet. I ended up preordering online from USPS, and they came without a problem.