Knightley plays real-life reporter Loretta McLaughlin

Knightley stunned photographers as she arrived in a black puff-sleeve corset dress

It highlighted her famously slender frame

Her shoulder-length brunette hair was softly curled and her eyes were amped up with a smoky blend of black and brown eyeshadows

The mother-of-two stood on black platform heels and sported shiny ox blood nail polish

She was captured strolling into the venue

Coon's lustrous blonde hair was worn in voluminous curls