Recipe:
MU Dark Phoenix
MU Ms Marvel hair

Basically a Dark Phoenix with the red portions of her costume painted white. I didn't repaint the gold portions of her costume or her face. I did however replace the hair with Ms Marvel's. I had to sand down the back of the head a bit to get the hair to sit properly. I think its a better match for her hairstyle from Phoenix Endsong, which is what I used for a reference.