Mates, Dates and Sequin Smiles

In this seventh book of the Mates, Dates series by Cathy Hopkins, protagonist Nesta becomes devastated after getting braces on her teeth. Her friends Izzie and Lucy attempt to reassure her that her appearance hasn't changed, but their efforts fail to convince her. When Nesta meets Luke, his attention and interest in her help restore her self-confidence despite wearing braces. The story focuses on themes of teenage self-esteem and peer relationships during adolescence.