Gossip site TMZ.com published photos of Kutcher "in full character" on Saturday. His outfit was a near match to the one Jobs was famous for wearing.
Jobs so liked the black turtleneck that he reportedly owned hundreds of them. Mona Simpson, Jobs' sister, remarked at his memorial service last October that he had probably owned enough copies of the shirt for everyone in attendance.
Last month, reports surfaced that Kutcher had been cast as Jobs for the indie biopic, which is tentatively titled "Jobs: Get Inspired" and will span 1971 to 2000. The "Two and a Half Men" star had previously been noted as resembling Jobs. The film's producer, David Hulme, has said that Kutcher believes the part was "meant for him" and has set out to "prove to the world that this is the right part for him."