It is a frequent question that comes up from candidates interviewing 'How should I dress?". I believe you should 'Dress to Impress'. I am a firm believer that as an interviewee you are better to over dress than under.
Oscar Wilde - 'You can never be overdressed or over educated.'
Although you do need to take into consideration the particular organisation. For example, being suited up for start up running out of a garage might not be appropriate. However, have pride in your presentation and don't be afraid to over dress. Remember you only get one first impression, so make it count.
Appropriate dress has never been an issue until just the last few years. It’s not just Gen Y job applicants who come to their job interviews dressed like they’re going to a club or to the beach. I’ve had people in their thirties and forties come to an interview in cargo pants with no belt and a pullover shirt that looks like an upscale tee-shirt (no collar, no buttons). It is just me or has the whole ‘dress-down Friday’ thing gone too far?