Gingham
Gingham was a form of cotton with stripe or cheque symbols.
The Sixth Doctor wore a single-breasted waistcoat of red and white gingham, (TV: The Mysterious Planet) right up to his death caused by the First Rani. (AUDIO: The Brink of Death; TV: Time and the Rani) His successor, the Seventh Doctor, wore it before switching for a beige jumper with cherry question marks and turquoise zigzags. (TV: Time and the Rani)
Ian Chesterton wore a sapphire and white gingham shirt during a meeting of companions. (TV: The Power of the Doctor)
Tom Barclay wore a gingham shirt when he joined forces with the First Doctor, Ben Jackson and Polly Wright to save Earth from Mondasian Cybermen during the 1986 Cyberman invasion of Earth. (TV: The Tenth Planet)