When it comes to red carpet fashion, Keira Knightley's wardrobe is on the waist cinching corset diet.
Wearing a Chanel dress this weekend at the Tribeca Film Festival premiere of new film Begin Again, Keira showed off her teeny tiny frame in another of Karl Lagerfeld's corset inspired frocks.
First debuted on the Paris Fashion Week runway by Cara Delevingne and Karl's gang of supermodels, the corset dresses have been causing a stir with their waist cinching structure.
Though Keira's never claimed to have tried the corset diet - rumoured to be Kim Kardashian's new pre-wedding obsession - the frocks have been accused of promoting a size-zero style body image.
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