
Optimistic Design and Sewing Instruction
Inspired garment repair and costume
Every garment transformed by Cosmo Martinelli rejects extractive fashion through intentional repairs, inventive upcycling, and precise and creative costume construction.
Studio Services
Three Studio Disciplines
From stage-ready theatrical builds to hands-on sewing education, our practice centers craft, repurposed textiles, and radical garment longevity.
Theatrical Costuming
Bespoke Garments
Inspired Repair
Bespoke theatrical builds constructed for impeccable stage presence, dance movement, and durable multi-season performance wear on dynamic bodies.
Custom-tailored pieces and constructed from deadstock fabrics, and creatively upcycled textiles in our studio.
Visible mending, structural denim reinforcement, patching, and aesthetic repairs that celebrate the garment's lived history through durable craft.


Hands-on garment Instruction
Private one-on-one sessions teach sewing machine mechanics, fit adjustments, and repair techniques directly on your own garments and thrifted textile salvage.
Group workshops can be scheduled for an event or organization with a themed project to fit your needs. Workshop content includes hand sewing, upcycled accessories, and denim repair.
Choose an initial project consultation, bespoke theatrical costume alteration, or hands-on private instruction session.