Though there is another (much larger ) segment of the population that cannot pull it off. If I see PINK stretched across one more giant cottage cheese butt waddling down the concourse I might just start screaming, "Didn't you look in the GD mirror before you left the house you deluded loon!!! You aren't Paris Hilton!! That does not look good on you!!"

The most casual I've ever gone for a flight was for a transpac to Brisbane. I had on a pair of heather grey lounge pants with a long sleeve shirt and cashmere sweater. Not quite pajamas but the closest I could come to them without being in pajamas. Most of the time its what ever I'm wearing to work that day (dress pants and a cashmere sweater or jeans and that same sweater if its Friday).