^^^word
to the OP, how to approach copyright is right in the word 'copyright':
if you don't own the
rights to use the photo, don't
copy it
but yeah...2257 issues, getting your site and your host DMCA'd, why go there when you can buy non-exclusive content cheaply and use promo materials from your sponsors for free? Also, a lot of non-star chicas use various means to pay attention to where their content appears online, so don't assume that just cuz a chica (or a photographer for that matter) isn't a 'star' that they won't go after people who infringe upon their copyright
don't use ish that doesn't belong to you. It's unethical and can cause you a lot of hassle.