Halloween Bachelorette Party Help!

So my girls and I are doing a Halloween bachelorette party! Were going Sat night with all our girl friends (12 or so) and go downtown. I wanted everyone to dress up since it is Halloween weekend and was thinking about doing a group costume, but I am really struggling with ideas! I orginally wanted to be a bridezilla, were I wore this horrible wedding dress I got from goodwill and would paint my face like a lizard (Ive done special effects makeup before) and then tell the girls to wear the ugliest bridesmaid costumes they could find. I didnt want them to have to go out and buy an ugly dress they dont want to wear again so I thought about all of us dressed like various taylor swifts and I would be the reputation taylor like the 'look what you made me do' video, which everyone thought was funny cuz I very much dislike tswift lol. But it isnt very bridal and I think theyres going to be about 10000 tswift costumes this year with that video! Any suggestions??