Ava couldn't be less like her popstar twin sister-and now she needs to take her place. A two-month tour impersonating her pop-sensation twin sister Eva-or Nova on stage-sounds like Ava Blakely's worst nightmare. For one thing, she can't sing, and being on a stage is her idea of torture. But it might be the only way to save Eva's pregnancy. Tour photographer Freja Callister just wanted a vacation and some pizza, but a last-minute...