Mates, Dates, and Inflatable Bras — Cathy Hopkins

A turning point is exactly what Lucy Loverling does NOT want. Everything is changing around her, and suddenly she has to make all sorts of decisions. Everyone else knows who and what she wants to be except her. Izzie has become friends with the glamorous Nesta, and Lucy isn't certain she likes a threesome. Nesta and Izzie look sixteen, but Lucy, at fourteen, can still pass for a twelve-year-old.

But then one day Lucy sees the most wonderful boy crossing the street, and things do start to change -- in all areas of her life...