Starstruck by Beth Miller

Sally Marshall is just your ordinary suburban woman, who gets by performing as a tribute act to a pop star (Epiphanie, even more famous than Beyonce). She, along with dozens of others.
Until one day she is asked by the real Epiphanie to do a life swap for a couple of weeks. Epiphanie trades Madison Square Garden for doing gigs in pubs. Sally is catapulted from suburban semi life to double for a mega-star, her life turned upside down.
But which life will they each choose in the end? Laugh-out-loud and unputdownable, Starstruck will leave you feeling warmer about all the different lives we choose.