Anonymous wrote:When their nipples stick out. My DD is 11 and a rising 6th grader who isn't wearing one. Some girls from her school started wearing them in 4th grade.
At this point, if DD wants one before her body needs one, then that's fine and I'd be happy to get her some.
(I know that I got my first bras in mid sixth grade, and pretty much all us girls were wearing them by the spring of that year.)
This. Girls get "breast buds". When they become noticeable, you should have them wear training bras - like little sports bras/small t-shirt things - to help conceal the details of their nipples, otherwise it attracts attention. You don't want some old guy ogling your 11 year old.