They are all based on these fictional kinsmen and women and therefore they have that flare of loyalty besides being done to accentuate some supernatural powers among the characters. However, not everyone has superpowers, others like Nakia appear modestly dressed in the movie. It is therefore advisable to know about the character you want to costume play.
The tribal wears are amazing and the magical spears are also something all the enthusiasts want to relate with. They are precautiously done with some warrior-like armor and they go a long way to make that statement of Wakanda affiliation. When you chose to go for these get them custom made for your body size to fit you well.
Just as stated above the movie is African based and most of the outfits have some borrowed aspects from certain African countries like Kenya and Zambia. To rock well in these outfits, research on some of those aspects so as you can find what you relate with and use the outfit to bring it out.
According to reviews and critics, the movie was widely watched making the costumes an easy wear at any cosplay and you would not need to explain it. This is basically due to its uniqueness and the fact that it is a movie for everyone not just for the comic hero fanatics.
Bald headedness is a common feature among many characters in the movie making it a signature look in the whole costume play. But you do not have to get shaved or be bald for you to play the part.