So I'm in college and I've applied for a part time job in a clothing shop. The shop is very casual and fashionable, stocks clothes from different shops like Topshop, Next, Miss Selfridge and River Island. I've got an interview next week, the lady said it's a group interview and it will be quite informal - getting to know each orther, when we're available and such. My question is: since the shop is trendy and fashionable and the interview not formal at all, should I wear something more casual? Or just go on the safe side with a smart outfit? Not very formal but you know, a white shirt and black trousers kind of smart

Thank you ladies x