Boygeorgefan - it's difficult to say...they definitely go for a certain type of personality - outgoing, bubbly, sense of humour, but knowing when to be professional and calm too. Apparently they get 45000 applications a year, and only interview a few hundred - so they can afford to be picky! If you're a fun, easygoing person and have the customer service experience they require, then there will be no problem!
Ex Cabin Crew - the ones I saw were wearing purple silk-type waistcoats and purple ties - I assume they wear the waistcoat on the plane but not sure! It's a really smart uniform!
Can't find a picture I'm afraid - will keep looking in case I come across one!