When designing Dr. Reyes costume I took into account two main things... 1. The woman looks spectacular in black (yeah so that's an odd reason sue me), and 2. She would want to blend into the shadows while at the same time having some body armor AND a med kit should she have to suddenly dive out of there to rescue a teamate in distress...which going with her character she would. I realize this isn't the most in depth drawing of Cecilia and the costume is sorta basic, but I tried to stick with her character first and foremost...this woman doesn't want to be with the X-men...she would rather be a doctor and would be leary of getting into a uniform, she would INSIST on having a med kit to play "slash and patch" person, and the communicator in her gauntlet would allow her to get backup should she need it. Otherwise Cecilia isn't a very big fighter by choice, so she would have a costume that would help her blend in with her surroundings should she need it.