Holland (Ryan Gosling) screen matched custom Anto shirt from The Nice Guys.
This particular shirt is his stage 2 shirt (slightly soiled) and is worn starting with the scene where both him and Jackson (Russell Crowe) are in a shootout with John Boy (Matt Bomer) and the following scenes outside the police station, during the car ride and the discussion with Mrs Glenn.
This is also the shirt worn in all the promotional materials for the film including the main poster.