baby shower drama

My boyfriend took it upon himself to invite one of his friends to my baby shower. Somebody I've never met before and he didn't even ask me if she could come. He TOLD me she was coming. And he expects me to just say okay and be all happy about it. He isn't even going to be at the shower so In my opinion that's just awkward for me. Is it wrong for me to say she shouldn't come? Or be upset he invited her without consulting me? I don't want to be a brat but I feel like it's really not fair. 
Let me update and just say his entire family is going to be there which is obviously okay with me. I'm including him in this shower but he specifically said he didn't want to go to the actual shower. So him inviting this random girl is just irritating to me