Bridesmaids

So my Fiancé has lots of friends. I personally had next to none. I had a few women that I got along with and enjoyed spending time with when I went over to my fiancé’s friends house. I felt obligated to make these women my bridesmaids in order to have even numbers for our bridal party. I didn’t want my fiancé to have 7 friends and me to only have my sister. So we agreed he would have 5 of his friends and I would have my sister and the 4 other girls that I got along with. Now with dress shopping, I kinda feel left out of the wedding party even though I’m the bride. I tell them my wishes and I feel overlooked and ignored. I told them I wanted dresses tried on in store and purchased from a store. They refused and wanted to go with online shopping from Azazie. I was alright with that as long as everyone got their dresses and tried them on together as a group to make it special. Well they ordered some to try on and they tried them on without me. I told them that same day that it was important to me that I be there. I asked them to still get together with me to try them on even though they’ve done it separately and they’re all just being difficult and dragging their feet. At this point I kinda just want to drop them all from my wedding but I don’t know how. What should I do or say?