More ostentatious than the robes we see him wearing in Rogue One. Actor Jimmy Smits indicated in an interview that the more humble costume in Rogue One was to indicate how the economy had disintegrated in the last 19 years. The opulence of the prequels was consumed by the perpetual war policy of Palpatine.

Full front:

1/4 Left View (stage terms):

Bodice detail:

Belt and forearm detail:

Trouser and robe cut detail: