Does anyone work at the Body Shop or has had an interview there before?

I have an interview coming up for a position at the Body Shop. It's a group interview, which makes me nervous. I was wondering what would be involved in the interview and what kind of questions they would ask me? I had only applied for a seasonal position, since they always need extra ppl for christmas time. My friend said they're gunna quiz me on beauty and cosmetic and skin care things, to see how knowledgeable I am about that. Is that true? Am I going to hafta do research and educate myself all about their company?