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Mexican-US actress and producer Salma Hayek-Pinault (C) holds a cardboard reading "# Bring back our girls", as a sign of support for the kidnapped Nigerian schoolgirls, while posing with French director Joan Sfar, an unidentified guest, French director Paul Brizzi, US director Roger Allers, US director Joan C. Gratz, French director Gaetan Brizzi, US director Bill Plympton and the General Delegate of the Cannes Film Festival Thierry Fremaux before attending the screening of the film "Saint-Laurent" at the 67th edition of the Cannes Film Festival in Cannes, southern France, on May 17, 2014. AFP PHOTO / BERTRAND LANGLOIS Image Credit: AFP

With a fuchsia strapless dress that accentuated her voluptuous figure, Salma Hayek was already guaranteed to turn heads on the Cannes red carpet.

So she used the opportunity to draw attention to a crisis — the kidnapping of more than 200 Nigerian girls. The Oscar-nominated actress carried a sign with the hashtag ‘Bring Back Our Girls’ as she walked in front of a throng of cameras to a preview of her animated film The Prophet on Saturday.

The ‘Bring Back Our Girls’ slogan has been used on social media. Notable figures including US first lady Michelle Obama have posed with the message to urge the return of the girls, taken hostage by the Islamic extremist group Boko Haram a month ago.

Hayek is not the only Cannes participant to use the media to draw attention to a topical event. On Friday, the cast of the Turkish film Winter’s Sleep held up signs with the hashtag Soma.

Soma is the Turkish city where 301 people were killed in an explosion and fire in a coal mine, the country’s worst mining accident.