Best: Pants
The pant is by far the most annoying thing to wear on a plane. Sitting upright for more than four hours can be brutal, especially when you're wearing trousers or anything without an elastic or drawstring. The best thing to wear, in reality, are leggings and trendy "sweatpants."
Clockwise: AV by Adriana Voloshchuk, $265 ; Michi, $129 ; MCQ Alexander McQueen, $90 ; Topshop, $84 ;Rag & Bone, $450