I'm who's Little Sister?!

One day, Olivia was a Smith, tomorrow she's a Horan? What would happen if the little things that her best friends have been teasing her about for years, her similarities to one of the members of her favorite band, One Direction's Niall Horan, the way they always said she was his secret little sister, are true? She looks like him, sings like him, and laughs like him, but most of all, they have the same personality. When Olivia finds out her "family" has been lying to her for all 11 years of her life, how will she react? Will she move from a little town in Tennessee to Ireland, or will the piece of Ireland that she cares about and that cares about her come to Tennessee? Some girls would kill to be in situation, but will she be overcome by some bad memories of her past, back when her parents let her go see Niall sometimes. The first time he calls her Oli, the name only Niall is allowed to call her, she's know that everything that happened in her horrible toddler-hood was real.