I sent out an email to my closest friends that I knew would like to be part of my wedding first letting them know that I wasn't having any bridesmaids. I explained that I didn't want anyone to feel pressured to commit to coming/spending money/feel stressed about it. I posted my wedding website after I discussed this with them so that feelings weren't hurt, and I just took the wedding party section out. They all understood.. and I am going to incorporate the ones that come in other ways