look/dress the part

look the part

To look like one specifically fits a particular role, occupation, etc. You can be an amazing actor, but to land a role, you also have to look the part. It turns out he's a hugely successful financial investor, but with those cargo shorts, he really doesn't look the part.
See also: look, part
Farlex Dictionary of Idioms.

look the part

COMMON If someone looks the part, they dress or behave in the way that is characteristic of a particular kind of person. You look the part of an English gentleman, so people trust you. Friends say he was in the Foreign Legion. He certainly looks the part: his hair is cut very short and he has a deep wound above his left eye. Note: This probably comes from the idea of an actor wearing a costume that suited the role or part that they were playing.
See also: look, part
Collins COBUILD Idioms Dictionary, 3rd ed.

look the part

have an appearance or style of dress appropriate to a particular role or situation (even if not being actually very well suited to it).
2005 Scotland on Sunday Sharapova meanwhile was having problems of her own. Dressed to kill in a gold trimmed dress with gold trimmed and spangly shoes, she looked the part even if her game did not let her act it.
See also: look, part
Farlex Partner Idioms Dictionary

look/dress the ˈpart

have an appearance or wear clothes that are suitable for a particular job, position, etc: I think Tim Evans should play Robin Hood. He really looks the part. He’s a funny kind of bank manager; he doesn’t dress the part at all.
See also: dress, look, part
Farlex Partner Idioms Dictionary
See also:
  • look the part
  • look up to
  • look up to (one)
  • look on with
  • look on with (someone)
  • look ahead
  • dragged through a hedge backward(s)
  • fix (one) with a look
  • have a look-see
  • get a dirty look (from someone)