Originally Posted by obscure2k
From what I have observed, people in international F tend to dress much more casually. ..e.g. Johnnie Depp in AF, FC in torn jeans and tee-shirt last year. Some will opt to change into the P.J.'s offered in international FC right before take-off.
If you have a confirmed FC class seat, wear whatever is comfortable. I would exclude shorts and tank-tops.
Good advice on International flying. I try to select a balance between style and comfort and there are a lot of clothing options nowadays. When traveling International, I know I eventually have to check into a (usually) first class hotel so I try not to dress too casually for the flight. If I'm delayed on check-in and need to kill time in the area I'd at least try not to look like something the cat dragged in.