The 'Green Screen Dress' meme phenomenon typically occurs when a public figure, most famously Queen Elizabeth II during her 94th birthday speech or various news anchors, wears a specific shade of lime green that matches chroma key backgrounds. The internet quickly treats the outfit as a blank canvas, digitally overlaying everything from pizza slices and galaxy patterns to political statements and other memes onto the fabric. It represents the ultimate 'design-your-own' fashion moment, highlighting how a simple wardrobe choice can inadvertently turn someone into a global playground for digital artists and internet trolls alike.