Third Doctor

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.

So I chose this - petroleum velvet jacket with red piping, dark trousers, blue ruffled shirt, red velvet vest, burgundy tie - and plaid Inverness cape. Are those cowboy boots?

 So - here's some velvet inspiration. I really like that velvet and satin dress in the black-and-white photo. Now, just change the jacket to more like the brown one, and add the ruffled shirt like in the fashion plate, and with frog closure and some soutache embroidery...

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.