Humans wear clothing for comfort and protecting themselves against exposure to weather and other environmental elements. In developed societies, wearing clothes is also considered a cultural norm, making social pressures a secondary reason people wear clothes.
The loss of body hair on humans made them more susceptible to cold and other environmental factors. As a result, humans started to experiment with wearing the skins of dead animals. The research surrounding exactly when humans first started wearing clothes relies on data gathered by studying clothing lice. By using DNA sequencing to calculate when the genes of clothing lice began to split from the genes of head lice, scientists can approximate when humans first began wearing clothes. Humans first began to wear clothing between 83,000 and 170,000 years ago, earlier than previous evidence had suggested and some 70,000 years before humans first began moving out of Africa to other parts of the world.
The earliest evidence of dyed clothing comes from the Republic of Georgia and dates to around 36,000 years ago, an indication of the beginning of clothes used for fashion rather than purely for survival. Around the 1300s in certain regions of the world, clothing began to be made to fit the shape of the human body by use of seams, lace and buttons.