12 - 14 is starting time for thongs, now-a-days. Who knows, in 10 years we could either have a return to the "grandma" underwear1 or "advance" to spray on "clothing"
1Daughters were talking about what underwear was allowed at basic training. In front of all the adults, including grandma. When the oldest made the statement "only grandma underwear". I, and the girls, knew exactly what was meant and what was excluded. Older adults wanted to know what "grandma" underwear was. IOW not thongs, hicut, bikini, etc. Only the "Sears all white cotton".