How to write into what not to wear?

i'm trying to write into what not to wear stacy and clinton, due to my frumpy cousin since of Style she is seventeen going to the 12 grade as of next year and off to college soon and also will have interviews and casting for her art work she needs a style that fits her personality that is presentable not worn down she is into a somewhat tom boyish style but she just don't know how to go about with that look with tucked in collard shirts are small t shirts tucked in and pants that meets to her stomach as if they are jacked up completely where you can literally see her cotton long legged socks and beat up shoes that are not at all cute to wear