When it comes to a job interview, the first impression you make is crucial.In research conducted by Classes and Careers involving over 2,000 hiring managers, 33% said they know if they’ll hire someone within the first 90 seconds of an interview. One simple way to make a positive impression from the get-go is wearing the right outfit, so keep reading for our dos and don’ts of interview wear!Do: tailor your outfit for the company/roleThe way you dress for the interview will depend on both the type of role you’re going for and the company you’re interviewing with.If you’re going for a professional role in an office environment, stick to business wear. However, if it’s for a role in a work environment with a less formal dress code, such as hospitality, retail, or trades, business casual will be suitable. Business casual is more flexible, but there’s a few basic rules you should follow: nice pants or a skirt, a nice practical shirt, and smart shoes.Do: wear appropriate footwearNo matter the role you’re interviewing for, leave the thongs and sneakers at home! For men, dress shoes or a smart pair of boots are the way to go. For women, a nice pair of shoes like loafers, heels or ballet flats are usually your best bet.Do: prepare beforehandYou should never leave it until the day of the interview to decide what you’re going to wear. Take the time a few days before (in case an item you want to wear needs a wash) to pick out an outfit.Don't: forget to iron!It’s one thing to have an outfit prepared for your interview, but always make sure you take that extra step and iron the night before if needed. If you’re rushing out the door on the day of the interview you may not get the time to do it, and crinkled clothing will make you look unprofessional.Don't: underdressIf you’re really not sure what to wear, remember that it’s always better to be overdressed than underdressed! As a general rule, clothing such as singlets and shorts are too casual and won’t be considered appropriate interview wearDon't: forget basic grooming beforehandWhile wearing the right outfit is important in making a great first impression, also be sure that you’ve done any necessary grooming beforehand. Make sure that your hair looks neat and tidy and wear some perfume or cologne (just be sure not to use too much)!For more tips, check out our infographic which cover 34 crucial tips for your next job interview.