Professional e-commerce catalog photo of two plain blank t-shirts, one pure white (#FFFFFF) and one pure black (#000000), laid flat on a pure white background. The white t-shirt is placed slightly overlapping the black t-shirt, with both shirts fully visible and clearly distinguishable. Front view, perfectly centered. Made from 100% real cotton fabric with highly visible natural cotton weave texture and detailed knit grain. Soft natural folds and subtle wrinkles showing premium heavyweight 180-200 GSM quality. Bright even studio lighting with soft subtle drop shadows. Ultra-realistic, high resolution, extreme cotton texture detail, clean minimal composition. Pure white background #FFFFFF. Square 1:1 aspect ratio. No hangers, no tags, no models, no logos, completely blank shirts.