In the last 10 or so years of hiring, I rarely see full suits, and appearance is one of the least important factors in actually getting the job. That is assuming your "clean", ie not a total scruff, showered etc.
My last few positions I showed up in jeans and a T-shirt, 2-3 days no shave, got all the jobs, but YMMV. I researched these companies thoroughly before hand, knew in advance these guys saw right through the suit facade.
You don't want to work for somebody/company that feels the need to control via dress, that is of course unless the environment dictates is, ie clean room, sales, marketing, customer facing etc.