Noticed when we were changing at the beach earlier. She hadn't mentioned it and is a bit shy about changing in front of anyone other that DD1, me or DH. She's tall for her age - slim athletic build. Has always been quite an early developer ie early first teeth, early talker, way ahead of most of her peers academically. But this was a bit of a shock. No idea how common it is, when I googled it the results were all about early onset puberty, which she isn't showing any other signs of. Anyone have any experience of this? Don't really want to take her to the Dr because I think that would just make her worry about something that doesn't currently seem to be bothering her. All advice gratefully received :)