Bridemaids

I know this has been a topic tons of times but how do I politely tell someone I m not too close with that I would no longer want them in my wedding. They haven’t purchased anything so far and they kind of took the initiative to invite themself to be in my wedding when I was in the midst of postponing my wedding and going through a hard time. I thought we would perhaps get close but in the end she is a friend just not someone who I would want in all my my photos. I don’t think she would get too offended and I would plan to tell her in person. Any advice on the best way to do it?