Elle Fanning had a health scare at the Cannes Film Festival Chopard Trophee dinner on Monday.

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The 21-year-old Cannes juror fainted during the dinner, according to Variety. She was helped to her feet by sister Dakota before security helped her out of the room. Fanning collapsed and fell off her chair.

Actor Francois Civil had just been welcomed onstage by Cannes director Thierry Fremaux when the incident occurred. The publication’s sources said the ceremony was briefly stopped and the crowd was stunned silent. Colin Firth was seated close to Fanning and quickly rushed over to offer his assistance.

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Fanning updated fans after the event, posting a thumbs up selfie on Instagram. “Oops, had a fainting spell tonight in my 1950’s Prada prom dress but it’s all good!” she wrote in the photo’s caption.

The Cannes Film Festival wraps up Saturday, May 25.