When people started wearing clothing.

The archaeologists from Germany have found remains of clothing that are around 300,000 years old. These are remnants of fur from cave bears that died out 25,000 years ago and were much larger than the bears of today. The researchers proved that cavemen hunted bears and used their fur for clothing.

Source

Ivo Verheijen, Britt M. Starkovich, Jordi Serangeli, Thijsvan Kolfschoten in Nicholas J. Conard, Early evidence for bear exploitation during MIS 9 from the site of Schöningen 12, Journal of Human Evolution, 2022.
Katie Hunt, Stone Age humans stepped out in cave bear fur 300,000 years ago, CNN, https://edition.cnn.com/2023/01/05/europe/bear-skins-prehistoric-clothing-scn/index.html, 6. 1. 2023.