The actress swept up the red carpet at the O2 Arena with co-stars Daniel Craig and Harrison Ford, in a flowing polka-dot Gucci gown with demure neck-tie.
On first glance, the dress appeared dramatic, but conservative - until Olivia turned to the side to reveal completely sheer panelling.
Long ombre locks, a slick of liquid eyeliner and a bold red lip completed the high-octane ensemble.
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