The Doctor's set

The Doctor's clothes set is made up of the The Doctor's Shirt and The Doctor's Pants. They can be bought from the Clothier NPC the day after a full moon.

These items are all equipped in the Social slots as they only provide a visual appearance.

Trivia

 * The Doctor's clothes are a reference to the Eleventh Doctor (Matt Smith) from Doctor Who.
 * Many players consider the Fez to be a part of the set, since the 11th Doctor has been known to like fezzes.
 * The 11th Doctor wore a Stetson (a cowboy hat) during Series 6 of Doctor Who. In three various episodes he wore a Top Hat.  - source