So today me and my FI decided to finish up our invites and take them to the post office. I didn't realize until we got hom from the post office that I forgot to add postage on our RSVP's!!!

I am so stinkin' embarrased! I know if it was
me being invited, I wouldn't mind buying a postard stamp to send the RSVP but I feel like people are going to get offended, and I SO don't want that to happen.

Should I not freak out about this?? :-/
FI says we should be ok....after all its just a postcard...