The tank-top was a sleeveless shirt worn as underwear.
Rose Tyler wore a white tank-top when she met the Metaltron Dalek, the first of its kind she ever met. (TV: Dalek)
Martha Jones wore tank-tops on dark peach, (TV: Smith and Jones-The Lazarus Experiment), vermillion, (TV: 42) or mauve. (TV: Reset)
Amy Pond wore a scarlet tank-top under her chocolate brown leather jacket. (TV: Victory of the Daleks; GAME: City of the Daleks, Blood of the Cybermen, TARDIS, Shadows of the Vashta Nerada)
Lisa Deranne wore a black tank-top when she met Sontarans including Commander Steg and Lieutenant Vorn. (HOMEVID: Shakedown: Return of the Sontarans)
Tegan Jovanka wore an ivory tank-top. (TV: Arc of Infinity-Enlightenment)
Kathryn McDonnell wore a black tank-top. (TV: 42)