If the recruiter spent extra time with you, took you to dinner or gave you a tour of the company facility, mention it. Some offices require employees to wear traditional business attire, while others allow people to wear jeans or shorts. When you're hired to work at a company, you will probably go through an orientation session during which you'll learn about the company's dress code. You can also take cues from how people were dressed when you went in for the job interview. It's best to wear what you would wear on your first day of work to a job interview.
Good grooming involves more than wearing nice clothes.
Clean, combed hair is important for both men and women. Your fingernails should be clean. Jewelry needs to be kept to a minimum, as does perfume or cologne. Revealing clothing or clothing that is too tight, torn or missing buttons are definite taboos, and scuffed shoes won't help your image. For women, cosmetics should enhance your appearance but not be distracting.