Viewers have reacted with outrage after a mother on TLC's hit series Toddlers & Tiaras encouraged her four-year-old daughter to pose with a cigarette on stage.

Channeling Sandy from Grease in a leather motorcycle jacket, the youngster performed her pageant routine with a roll of tobacco held firmly between her lips.

'Don't forget to smoke,' her mother cooed from sidelines as several audience members, including panellists, expressed their distaste.