disguise

dis·guise
disˈɡīz/
verb
1.
give (someone or oneself) a different appearance in order to conceal one's identity.
"he disguised himself as a girl"
synonyms: dress up as, pretend to be, pass oneself off as, impersonate, pose as; More
noun
1.
a means of altering one's appearance or concealing one's identity.
"his bizarre disguise drew stares from fellow shoppers"