I Got a Wedding Invitation That Tells Guests What to Wear! What would you do?

Is this a new fade?

Dr. Shane, One of my friends is getting married in a few months, and she's definitely become a bridezilla. I just got her wedding invitation, and it actually has a DRESS CODE. Women have to wear WHITE. And men are supposed to wear either a white suit, or some sort of light khaki that's really close. Is this a thing now? I had no idea you could tell your guests what to wear to your wedding. And how many guys have a white suit? Can you actually require your guests to dress a certain way in order to come to your wedding? Eric, 35