A: The people who are hosting the wedding (oftentimes, these are the same folks who are footing the bill) should be at the top of the invitation. If that's both parents, here's what you do:
request the honour of your presence at the marriage of their children
Monica Elizabeth and
Chandler Michael
If the groom's parents are simply honored guests at the event, then their names can go after their son's:
request the honour of your presence at the marriage of their daughter
Monica Elizabeth to
Chandler Michael Bing
son of Mr. and Mrs. George Bing
If either set of parents is divorced, things get a bit more complicated because you'll need to put each parent on their own line. Or it might be easier for you to include them this way:
Monica Elizabeth Geller and
Chandler Michael Bing
request the honour of your presence...
You'll get the same idea across, without turning your invitation into a list of names.
See all questions about wedding invitations and stationery etiquette
