While attending a New York Times 'TimesTalk' event last night (August 15) to discuss his new film Cosmopolis, the actor was photographed with his jeans unzipped on the red carpet.
The picture shows Pattinson dressed casually in a polo shirt, jacket, jeans and backwards baseball cap, standing nonchalantly and seemingly unaware of the mishap.
The Twilight star recently appeared on Good Morning America, where he played down talk of girlfriend Kristen Stewart's recent fling with her Snow White and the Huntsman director Rupert Sanders.
"You get into [the industry] to do movies," Pattinson said. "I've never been interested in trying to sell my personal life, and that's really the only reason people bring it up. "
Pattinson also appeared on The Daily Show on Monday (August 13), where host Jon Stewart offered him a pint of ice cream for his woes during their interview.
"The last time I had a bad breakup, Ben and Jerry got me through some of the tougher times, so I thought we should bond," Stewart quipped.
Cosmopolis is released in the US on Friday (August 17). Watch a clip from the movie below: