dress the part
Verb
Meaning
dress the part (third-person singular simple present dresses the part, present participle dressing the part, simple past and past participle dressed the part)
To wear the clothing that is appropriate to a role.
Examples
I was brought up to be a gentleman. That means you know how to walk, talk and dress the part.
As a bounty hunter, I have to dress the part. If I came to the door and looked like Carrot Top, you'd laugh.