Fake Matt Damon Rep Disrupts Gwen Stefani's LAMB Fashion ShowThe crowd at Gwen Stefani's L.A.M.B. fashion show anxiously awaited as one empty seat needed to be filled. The man in waiting: Matt Damon. But he never showed.

Apparently, an impostor duped the organizers, pretending to be Damon's publicist. He demanded the coveted front row seats for the actor, his wife and a pal named Peter Gianquinto. But when it became obvious that Damon wasn't coming, organizers had '8 Mile' actress Taryn Manning fill the seat.

"Organizers changed the entire seating plan to accommodate Damon, so everyone was baffled when he didn't show," a fashion show rep tells PopEater, adding it seemed "out of character."

Damon's publicist, Jennifer Allen, had no knowledge of the request and told New York Post's Page Six, "He's never been to a fashion show, to my knowledge. No one called me to check."