Store is here: 1100 6th Ave, New York, NY 10036

Also happens to be their corporate headquarters (gulp).

For white clothes, you can try anywhere really, but K Mart stocks white sweatshirts. Shoes at Payless and pants at... H&M? Just a thought. If you live near a Goodwill that would work too obviously. Either buy cheap work clothes on Amazon or just get a super cheap coverall.