Now, he's a little more problematic. Because he changes clothes all the time. The only thing in common with all the choices is a) velvet smoking jacket b) Inverness cape and c) ruffled shirt.
And then the inverness cape... or perhaps this "Sherlock Holmes"-y travel coat :-D
And isn't this the very same hairstyle? :-D It should just be white... but it's frilled bangs. The rest of the hair would have been gathered in a bun quite up on the head. This hairdo works also for doctors IV and VI, and also VII, even though VII wore a hat most of the time.