What age can you start working at clothing stores?

I wanna start working & earning some money because i want an iphone 5 so bad.
I want to work at clothing stores like forever 21, Charlotte russe, wet seal, Aritzia, victoria's secret pink, urban outfitters, american eagle. I wanna help stock clothes & fold them and put them on hangers and stuff. I know i'm not i'm old enough to be a cashier yet.oh & and 14.

16 in most states.

I would say 16

At victoria's secret and PINK you have to be 18. (i know from working there in the past)
at most clothes stores you have to be a high school graduate or older, so 18. I knwo forever 21 and urban outfitters require that much.i'm sure most other retail stores have the same requirements