For artist Wolfgang Tillmans, portraiture is a collaborative process between photographer and "accomplice." While Tillmans' photographs are often referred to as "casual" they are actually the result of a carefully constructed process of engagement with his models. Each sitter, whether a world famous rock star or a family member, issues forth both vulnerability and dignity. Presented here are a selection of some of the best of these portraits taken between 1988 and 2001 and chosen by Tillmans himself. Subjects include the filmmaker John Waters, architect Rem Koolhaas, musicians Moby and Michael Stipe, actresses Irm Hermann and Chloe Sevigny, as well as the artist's family and friends.