Об­ра­зуй­те от слова EXPRESS од­но­ко­рен­ное слово так, чтобы оно грам­ма­ти­че­ски и лек­си­че­ски со­от­вет­ство­ва­ло со­дер­жа­нию тек­ста.

...but now it is possible to do so on a more personal level, as people use their outfits as a form of self-⁠________________. Even when there is nothing obvious like blue hair or a shredded shirt.