Two sectional sofa options, both featuring modular components.
Above: Italian architect and designer Piero Lissoni's appealing Alphabet Modular Sofa System for Fritz Hansen is comprised of four basic shapes— seat, armrest, backrest, and cushions — that can be combined to create custom seating configurations. The Alphabet Sofa is available through Karkula in New York; prices start at $6,995.
Above: CB2's Molto Sectional Pieces offer a similar look, with prices starting at $349. The system is comprised of three pieces—armless chair, corner, and ottoman—and features super thin arms and backs, boxy seats, and feather/down pillows.