I flew to San Francisco today, and feel compelled to compile a list of questionable — and ubiquitous — travel fashion choices I saw peppering the airport.

In my estimation, when suiting up for a flight, it’s best to refrain from rocking any of the following:

Rehab Chic

The headscarf with the topknot hairstyle, the leggings, the Uggs, the over-sized sunglasses worn indoors. It’s all very Britney and all very bad.

Schlub-With-Nice-Bag

Guys, if you’ve sprung for the nice Louis Vuitton messenger bag, you can’t get away with wearing ratty Rockports and a stained Polo shirt. If you’re gonna look schlubby, do it with style — get a trench coat.

Pajama Pants

Yes, we all want to wear our flannel PJ pants to work. But we don’t. Because it’s goofy. Find a pair of roomy jeans or khakis and leave the drawstring reindeer-printed drawers in your duffel bag.

Club Wear

Unless you’re alighting a private plane sent by a casino to Las Vegas, there’s nothing classy about donning 4-inch hooker heels to fly. And cha-cha jersey mini-dresses belong on 17-year-olds at a hip-hop club — not 30-year-olds in line for a burrito at Chili’s Xpress.