Author
Cathy Hopkins
2 books here

Mates, dates and inflatable bras
Middle grade · ages 10–14 · 750L · 2003
Honest and funny about early-teen friendship drama and social anxiety—the kind of book girls recognize themselves in, without being preachy.

Recipe for Rebellion
Young adult · ages 12–16 · 820L · 2007
A solid contemporary YA about refusing to fit the mold; Hopkins nails the specifics of teenage social pressure without preaching, and the art-world backdrop gives it texture most school-rebellion books lack.