I just got my wedding invitations in the mail today and they are absolutely gorgeous. I was so ecstatic about them that I failed to realize till later in the night that the RSVP card envelopes that I was sent don't meet the minimum requirement for the USPS. I of course want the guests to send these back to me. They are 4.33x4.33 inches.. Has anyone else ran into this same issue or have any advice? I'm not sure whether I should buy bigger envelopes and deal with it looking weird or if possibly the USPS would send them even if they are a little smaller than the minimum.