Scientists face a challenge in determining when humans began wearing clothes due to the lack of preserved clothing artifacts. Instead, they rely on creative methods such as examining bones with skinning evidence, discovering sewing needles and awls, and studying lice. Clothing likely became necessary as early humans evolved from their fur-covered ancestors, lost their fur, and needed protection from the elements after transitioning to walking upright.
https://www.livescience.com/archaeology/when-did-humans-start-wearing-clothes
