Security officials quickly pulled the man away as he tried to hide under Ferrera's voluminous gown before the premiere of How To Train Your Dragon 2.
It was a bizarre incident on a red carpet renowned for its strict decorum. The man was later identified as Vitalii Sediuk, a Ukrainian prankster known for such stunts.
Yet Ferrera did not seem ruffled on the carpet and was in good spirits at the movie's after-party, laughing with guests and taking pictures, although s he declined to comment on the incident.
The former Ugly Betty star was on her way into the Palais des Festivals for the world premiere of the DreamWorks animated sequel.
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