I was gonna get it but my gamestop sold out so i gotta wait sadly. I too pick my costumes based on looks, truth be told in pokemon X/Y im changing my outfit like every 3 days...
also never fear belle, your therapist grad student is here.
the DSM5 isnt as categorical and set in stone as its predecessor, but heres the criteria youd need to meet to be considered for depersonalization/derealization disorder:
Depersonalization: experiences of unreality, detatchment, or being an outside observer with respect to ones thoughts, feelings, sensations, body or actions.
Deralization: Expereinces of unreality or detachment with respect to surroundings(e.g., individuals or objects are experienced as unreal, dreamlike, foggy)
B. during this experiences, reality remains in tact (aka you still realize you are in this world)
C. causes clinically significant impairment in daily life
the biggest descriptive criteria of this is in relation to yourself, and that you feel detached from yourself as if you have no sense of self or feel that you are no one. This also includes knowing you have feelings but not feeling them, or even that you may feel that your thoughts dont feel like your own.
really this spectrum is saying you dont feel like yourself in your own body, and that you feel as if you are out of your own body in mind and, well, body lol. your feelings of detachment to others and even yourself may be more in the spectrum of a antisocial personality if its mainly around not empathizing and understanding others. Again though you have to meet all of the above in order to be even considered for diagnosis, but its all measured on a continum now so you very well could have aspects of depersonalization happening in your life.