I rather like the trope of "middle schooler, but tall for her age and big boobs like a fashion model"

https://varishangout.net/media/181677a3-b704-4121-9c7a-b369aa893dad/FyNxNLHWIAAhT1p.jpeg

https://varishangout.net/media/3ed56520-16be-4bee-81cd-944824767a91/FyNxM_vWcAIjrmt.jpeg