... We'll try to revive 1920's fashion because we're in a new 20's and if we're going to refer to the decades again as the 20's, 30's, or 40's we'll do our damndest in full awareness to restore the culture and fashion of those times?

No, that's stupid.

People will make references from time to time, and I expect the fashion industry will make an attempt to use the 1920's. I don't see it sticking though. Dudes aren't going to go back to wearing suits around town so soon, or calling each other "Wise Guys". The girls fashions could sneak in some places though.

But what are the other 20's stereotypes? Going to bars? Committing crimes for illegal narcotics? We already do that. The only thing I can think is that Trump is the type of dude who could recreate the Harding administration in the sense that it isn't hard to imagine a world where Trump refuses to disconnect his business dealings with the Presidency and gets caught up in corruption scandals so large they end up defining him.

I think you could herald the theme of those decades but bring them into modern times. Sequins and tassels could make a come back, and the hair and body met things are already proliferating. Short cuts with big curls is classic and pretty and making a comeback. And there's neat electroswing music coming in strong. Plus, who doesn't wanna bring back a decade of cocktails instead of beer and wine. Yummier AND classier.

I don't think restoration is a desirable goal, but refocusing where we root our nostalgia has historically always been kind of productive. Not that anyone can choose where that fresh focus might come from