LONDON — Nicholas Kirkwood is set to launch his debut men’s collection at a pop-up shop in Mayfair, London, Saturday. The Nicholas Kirkwood Men’s shop located on 109 Mount Street — just down the road from his women’s flagship — will carry the full line of his fall/winter 2013 collection. The 267-square-foot space was designed by Mehrnoosh Khadivi, with an all-black concept inspired by Kirkwood’s installation during the London Collections: MEN shows in June. The pop-up will run from October 26 until mid-January 2014. A men’s e-commerce store is slated to launch next month at Nicholaskirkwood.com.