Tip - Is money an OK wedding gift? It can be: Here's how

Editor’s note: Anna Post is the great-great-granddaughter of Emily Post and a spokeswoman for the Emily Post Institute. She is the co-author of “Emily Post’s Wedding Etiquette, 6th edition” and “Emily Post’s Etiquette, 18th edition,” as well as the author of “Do I Have To Wear White?