Why is it important to dress for success at a job interview?

I am confused, The interviewer or interviewee? 
Interviewer- It is important that you dress for success to let the interviewee
know that this is a serious and professional job.

Interviewee- It is important to dress for success so the interviewer knows that you are serious about getting this job.

It shows your appearance and maturity. A clean and neat outfit is a successful choice. All interviews are formal. 

Some disadvantages to leasing a car is that you are counting on someone to give you money every week or month depending on what you decided and if they don't have all of it well what if you needed that money now you as well have to pay not in full. a disadvantages to purchasing a new vehicle is if it is used then not all the time will absolutely everything work. its almost like a trail and era. although if it is a new car they will try to though all these specials and deals at you in your lease and it can be very overwhelming if you are not use to it.