My Worst Best Friend — Dyan Sheldon

Gracie and Savannah are best friends -- and utterly unalike. Savannah is beautiful, outrageous, and irresistible to the opposite sex. Gracie is shy, smart, and would rather be studying lizards than meeting boys. For years they've made a surprisingly great team, and (until now) it seemed as if nothing could come between them. But this summer, Savannah's talent for lying and manipulating is becoming less charming. She's fallen head over heels for an elusive college boy, and Gracie can't help wondering: is her friend as confident as she seems? Meanwhile, Gracie herself has found a boy she really likes, but Savannah could hardly be less supportive. Isn't it time that Gracie started thinking for herself?