London: Actress Rebecca Hall, who is starring opposite Robert Downey Jr in `Iron Man 3`, suffered a wardrobe malfunction during the premiere of the film.

The 30-year-old actress wore a plunging neckline black jumpsuit that ended up revealing her modesty, reported media.

Hall, who has previously starred in Vicky Cristina Barcelona and Starter "For 10", plays Maya Hansen in the action film.

Downey Jr, who plays the film`s hero Tony Stark/Iron Man, donned a black suit with a satin trim and oversized tinted glasses.

Gwyneth Paltrow, who plays Pepper Potts in the film, gave a miss to the premiere.

The film also stars Ben Kingsley and Don Cheadle in pivotal roles.