@adwa001 i dont know if this is going to be your first interview but is a matter of proper attitude to be in a suit. i just completed the second part of interview with Saudia. All the members of the board were wearing suits.imagine your self not being properly dressed.they are extremely friendly they will make you feel very comfortably in interview and in Sim as well.there is no reason for you not to be in a typical standard . The instructor in the Sim was very relaxed .He told us to take off the ties and we never felt there was some kind of trick or a secret during the 45 minutes evaluation . After the assessment he told to all 5 of us that we have the green light and hopefully he will meet us again during training in JED.So if you really want this job dont blow it by not wearing a suit.