French art photographer and fashion designer Hedi Slimane, named in early 2018 as creative director at the prestigious, Paris-based luxury brand Celine (formerly known as Céline), has his sublime, architecturally pedigreed pad on a coveted cul-de-sac in the perennially chic and, hence, extravagantly expensive Trousdale Estates area of Beverly Hills, Calif., available at $17.5 million.