“Admit your insensitivity and tell her how terrible you feel about hurting her…Ask for forgiveness, but don’t expect the friendship to be patched up overnight.”Tod’s cape and bag; Preen by Thornton Bregazzi skirt; Aurélie Bidermann necklace; Alexis Bittar cuff; Alexander Wang shoes.

Tommy Hilfiger top and skirt; Roger Vivier bag; Alexander Wang shoes.

Victoria Beckham top and skirt; Alexis Bittar cuffs; Fendi bag; Alexander Wang shoes. There is something hugely satisfying about the Posts giving you permission to act a certain way.

Etiquette, they write, is a newly relevant topic in the era of technology.

What they are too polite to come out and say directly is that we live in a most impolite time.

Today, The Emily Post Institute is run by her descendants, who act as ambassadors of courtesy through many books, e-learning programs, and podcasts.

Lizzie Post, a fifth generation etiquette expert, told us she and her cousin want to uphold their family’s tradition of good manners — with a modern flair.

Like, how little can you wear in a selfie and still maintain that you're a respectable, professional person?

What does it mean when a married man sends you a perfectly innocuous Instagram DM?

For example, they advise exes with children to consider staying friends online so kids can tag both parents in photos.

I would love to distribute their advice on commenting far and wide through some of the more untamed spaces online (Reddit, Kylie Jenner’s Instagram selfies).

Is it weird to reference a something you Tweeted in a conversation in real life? It takes practice to remember that every interaction, whether it’s online or off, affects other people and to act accordingly. And for those with conundrum that aren’t answered in the book, there is hope online.