Lizzy Martinez, the 17-year-old student who was reportedly told to use Band-Aids to cover her nipples by an official at her school, is using the situation to spread awareness about dress codes. Go ahead, embrace your inner Rihanna. You can double up with a loose fitting tank underneath a T-shirt, or switch it up and wear a T-shirt under a silk slip dress — a grungy, on-trend layering.