One can rarely go wrong with a plunging neckline!
The dress itself was relatively simple, with short sleeves and black leather piping running along the skirt and bodice, while a broad leather cummerband-style panel around the middle accentuated Mia's tiny waist.
Some Cannes attendees have been going all-out glam, but this understated style works just as well!
[Image via KIKA/WENN.]
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