Keira wore the unusual monochrome number to the Chanel catwalk show at Paris Fashion Week and it made her waist look miniscule.
The white top and skirt sections of the frock were deliberately cut oversized, emphasising her already trim tummy.
Keira, who is famed for the slender frame, certainly doesn't need any help in that department. We, on the other hand, would love to try this dress on!
The British actress was later spotted in the FROW alongside her husband James Righton, and the couple laughed and kissed before the show kicked off.
While most designers have tended to opt for a traditional catwalk at this year's PFW, Chanel chose to do something a little different by styling out the runaway as a supermarket!
Keira, James and their fellow guests were even treated to appearances by Rihanna and Cara Delevingne - who were fooling around in a shopping trolley!
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