Tailcoat
From Tardis Wiki, the free Doctor Who reference
The tailcoat is a knee-length coat characterised by a rear section of the skirt, known as the tails, with the front of the skirt cut away.
Josie Day wore a double breast tail coat done on steel blue without sleeves. (COMIC: A Matter of Life and Death, The Lost Dimension)
Sutcliffe wore a royal blue tail coat. (TV: Thin Ice)
The Pied Piper wore a scarlet tailcoat when posing as Mr. Spellman, director of Spellman's Magical Museum of the Circus. (TV: The Day of the Clown)
The Ringmaster of the Psychic Circus wore a midnight blue tailcoat with rainbow lapels. (TV: The Greatest Show in the Galaxy)