Abstract: A modular article of furniture capable of assuming a variety of shapes and configurations and having at least one body support structure having at least one seatrest unit and at least one releasably associated upper body support. The seatrest unit is formed in the geometric shape of either a square, triangle or rhombus, the sides of each individual unit being equal to one another and also equal to the sides of each other individual unit. The seatrest units may be combined and associated with each other and/or with one or more upper body supports to provide variable furniture configurations. The resulting modular article of furniture offers a variable and interchangeable body support structure having a floating appearance and wherein the seat support may comprise a soft-sided cushion arrangement.