Lindsay Lohan has shot down rumours that she gets by on a Red Bull-based liquid diet.

The actress has been sporting a skinnier figure in recent months, amid claims that her svelte new look is the result of a daily intake of Red Bull, cigarettes and sweets rather than a healthy diet and exercise.

But Lindsay's rep has slammed the reports, telling People, "Lindsay has always enjoyed a Red Bull but she eats.

"Everybody needs to mind their own business and stop worrying about what Lindsay eats or doesn't eat."

Other stars rumoured to be fans of the liquid diet include Katie Holmes (as part of the Scientology-approved Purification Rundown regimen), and Angelina Jolie, who reportedly ditched solid food in a bid to drop weight to more convincingly play a man in upcoming spy thriller Salt.

See Lindsay's fluctuating figure below