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Beyoncé’s first show for her Renaissance World Tour in May left fans just as floored by her outfits as they were by her setlist. One look featured a larger-than-life, triangle-paneled robe and headpiece by Japanese brand Anrealage. At first, the garments appeared pure white, but after exposure to two moving bars of light, they burst into color.

Bey’s Renaissance look is an example of a fashion technology that’s soaring in popularity: the use of color-changing fabrics to create chameleon-like clothing. In this case, the surprise came from Anrealage’s UV-reactive textiles. The brand unveiled the technology in 2015 and have since used it in entire collections, including its viral fall-winter 2023 show.