Pretty straight forward, saw the ad online and emailed my CV/Resume to them, they rang me about a week later inviting me to an interview.
The interview was on my own but I prepared for both a group and solo interview so it wasn't a problem. I turned up 10-15 minutes early, chatted and joked with the people that worked there, they were really laid back and nice. The interview was nothing out of the ordinary, I was asked -
About myself
About my work experience
Why I wanted to work for the company
A time I've given good customer service
How I deal with awkward customers
I'd recommend wearing smart casual, such as clean black jeans, a button up shirt and a nice pair of vans or similar. Don't suit up if you're a guy, you will feel overdressed and out of place. Just look fashionable but smart, take look at what the models are wearing on the website. I had piercings for the interview and still got the job, make sure you look well-kept and prepare for the interview in every way you can.