I suggest you post in /r/AskAnthropology as this is a question better suited to there, but it’s worth noting that clothing serves many functions besides keeping one warm:

• sun protection: clothing protects from sunburn
• comfort: clothing can increase comfort. e.g., a band around the chest for women can make running more comfortable for a large-breasted woman
• general skin protection: insect bites, scratches and scrapes, nettles, etc. They can keep dirt and sand out of body openings or existing cuts.
• modesty: many cultures developed some kind of taboo around public exposure of genitalia
• cold protection even in hot climates: have you ever been in the desert? it csn be quite hot in the day and cold at night.
• swaddling for infants
• indicators of status and wealth, or one’s role in society.