Lindsay Lohan really is disappearing before our very eyes.

The Mean Girls star - whose weight has been known to fluctuate - is showing no signs of slowing down her vanishing act, stepping out yesterday looking more frail than ever.

Yesterday the sometime actress' bleached jeans emphasized her tiny thighs and miniscule waist as she headed out for a shopping trip at Maxfield in Los Angeles.

Lindsay has denied rumours that her skinny figure is the result of a diet of Red Bull and cigarettes.

See her weight through the years below