When you're jetting off on holiday somewhere far away, there's a lot to think about. Booking the flights , packing the luggage and organising the plans can take up a lot of time, so there's other things that might not take priority - such as the clothes you actually wear on your journey. If your flight is a long-haul one, chances are you'll just want something comfortable to wear. However, a flight attendant has issued a warning about one item of clothing she would 'never ever' wear on a plane.