Don't wait until the last minute to make sure your interview clothes are ready. Have an interview outfit ready to wear at all times, so you don't have to think about what you're going to wear while you're scrambling to get ready for a job interview.
Regardless of the type of job you're interviewing for, that first impression should be be a great one. When dressing for an interview for a professional position, dress accordingly in business attire.
If you're applyng for a job in a more casual environment, a store or restaurant, for example, it's still important to be neat, tidy, and well-groomed, and to present a positive image to the employer.