Jean Grey Phoenix Costume is a green body suit with long opera gloves and thigh high boots, as well as a sash were made of some golden fabric that almost looked like liquid metal. The clips of the sash as well as the logo on her chest were stylized phoenix symbols. The Phoenix Force duplicated Jean Grey’s body and infused it with some of her life-force and essence, she posed as Jean Grey.
When the Phoenix no longer can repress her dark side she transformed into Dark Phoenix. Her Dark Phoenix costume changed shifting from green to red, this version has a bigger emblem on her chest.