Puberty In 2nd Grade Becoming Ever More Common By Molly Plunkett Posted September 4, 2010 Moment of Science Early bloomers have always been around. However, there is a noticeable trend of girls as young as 7-years-old who are already hitting puberty. Something doesn’t seem right about hitting puberty before you hit 11 or 12. But it’s happening! More and more young girls are entering puberty e…