no! its not. as long as you can "fake" the allusion or make the flames ur fine. Ive seen some great cosplayers just buy nude bras that are their skin tone then make the bathing suit on top with just black fabric.
Anime and Kpop cosplaying is life~
RapMonster- BTS N.O
fem!Ravi- VIXX Hyde
Hyuk- VIXX Voodoo Doll