REBEL TALK: Designer Keanan Duffty will present a free lecture on Thursday about how anti-fashion icons such as David Bowie and the Sex Pistols have inspired fashion. The lecture is based on Duffty’s 2009 book, “Rebel Rebel: Anti-Style” co-written by Paul Gorman. The lecture will be held at 6 p.m. at the New York Public Library for the Performing Arts, Dorothy and Lewis B. Cullman Center, Bruno Walter Auditorium in Lincoln Center. It is open to the general public and is expected to last about an hour. The lecture will include filmed interviews with the late Malcolm McLaren, Vivienne Westwood’s design partner and manager of the Sex Pistols, author Legs McNeil (“Please Kill Me” and “I Slept With Joey Ramone”) and Rufus Wainwright, as well as many iconic still images of six decades of cultural rebellion. The lecture will be repeated on Sept. 22 at LIM College’s Fashion Insider’s Series, and on Oct. 20 at Drexel University in Philadelphia. Duffty’s latest project is a documentary on the life of McLaren, which is expected to be completed sometime next year.