We will send you a proof of your invitation, to approve, via e-mail before we print. Kick off your wedding the right way. These made to order personalized wedding invitations can be customized to say exactly what you want. Each two-sided flat invitation measures 8.5â by 5.5â and includes a 5.5″ x 4.25″ Response card and matching mailing envelopes. Love the design, but need to match your wedding colors? We Color Match!