Miss Look at Me I Know it All

I have this friend....well she's a friend of a friend (FoF) and she is the most self-centered person I have ever met.  I'll be having a conversation with a friend and then the FoF interjects herself in to the conversation and makes it aaaaaallllllll about her.
We're in the same room.  If I wanted to include you in the conversation I would have asked you to join.
Seriously, we could be talking about oh I don't now......the Holocaust and she'll jump in to the conversation and say she was there.  That's how obnoxious and self-centered she is.