09/07/2012 09:23 EDT | Updated 09/07/2012 10:41 EDT

TIFF 2012: Keira Knightley Stuns In Sheer Black Dress On 'Anna Karenina' Red Carpet

Actress Keira Knightley attends the premiere of

Keira Knightley pulled out all the stops when she hit the red carpet for 'Anna Karenina' during the Toronto International Film Festival (TIFF).

The movie's British star sported a shimmering floor-length black gown with a plunging neckline from Elie Saab — perhaps a modernized nod to the period film's rich costumes imagined by Jacqueline Durran who also designed that green dress from 'Atonement.'

Our favourite part? The sheer style we've seen in spades this year; it looks sophisticated on top and just daring enough on the skirt.

All you other TIFF starlets had better take note — Keira just upped the ante.

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