Ok, let me preface this with the fact that my parents and I are foreign (but have been in the US for 15 years, so, no longer super-foreign) and my fiance's parents are not, so I have two different opinions going and I'm not sure what to do.
I am working with our invitation designer and we have changed how my parents and the groom's parents are addressed on the invitation a few times.
It has been "Mrs. ForeignMom'sFirstName and Mr. ForeignDad'sFirstName ForeignLastName" and "Mrs. Groom'sMomFirstName and Mr.Groom'sDad'sFirstName Groom's Last Name." (Ex: Mrs. Jane and Mr. John Kelly) Then my FMIL said that it sounded "funny," which I agree with, and she usually sees it as "Mr. and Mrs. John Kelly," which is also how I have seen it. So, I changed it to what my FMIL suggested, and my mom was upset that her (first) name was no longer on the invitation, which I understand. So, then I changed it to: "Jane and John Kelly" and the equivalent for my parents, but my FMIL said that sounded informal, and the wedding is not.
I'm looking for suggestions--is there another way to write this that I haven't considered? I 100% understand where both mothers are coming from--I don't want it to sound "funny" or "informal" and most importantly, I do not want to offend my mother!