I applied online. I interviewed at Gap (Charlottesville, VA) in May 2012
Interview
They were desperate for people I guess because I filled out an application online and was called a few days later. The interview was basically her telling me about Gap and then she just asked me about myself (what I was studying, where I'm from, etc.) and how much I wanted to get paid (which I regret not saying a higher number since I knew I was going to get the job before it was even over). They're a pretty laid back store so even if I did have a real interview it would have been easy, basic questions. They are all about customer service and making the customer happy so just be really friendly and outgoing and mention something about the customer being important and you'll be golden.
Group interview with other candidates with the store manager. Arrive at the store and wait for other candidates. Then interview happens in break room and it lasted roughly about 30-60minutes
It was a group interview of about 10-12 people. If I remember correctly they take you to the back, the stock room, and ask almost everyone the same question. The interview lasted about 30 minutes.
It was very easy, one in person interview with the general manager and then I was accepted! Mainly personality and behavioral questions were asked, and I think enthusiasm on my end helped the most.