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Twins Brandi and Kandi Dreier weigh 587lb (42st) and 604lb (43st) respectively.

Worried that the sisters from Washington in the US are heading for an early grave, their grandmother Sherry offers to fund a move to Houston, Texas, so they can have
weight-loss surgery.

This documentary follows their journey and delves into the girls’ troubled upbringing which led them to turn to food for comfort.