A specialized interior contractor working for a department store secretly installed ultra-thin pinhole cameras with less than 1mm diameter inside the lingerie fitting rooms, enabling long-term covert filming. Collaborating discreetly with store staff, they captured highly concealed footage. Of particular interest is the scene where a woman tries on an extremely tight nylon bodysuit that tightly hugs her body. This rare footage reveals realistic moments unfolding within the confined space of a fitting room in a retail store.