Which One of These Stars is Really Sia? Issue 4.1 - Entertainment - Jul 2, 2014 By: Leah Prinzivalli SHARE: Tweet 2 of 8 Anna Kendrick Before “Pitch Perfect”, no one knew Anna Kendrick could sing. What else is she capable of? Sia 17 Years Later: What ‘Thong Song’ Music Video Gets Wrong About Women Quirky Beauties Wearing Watches?!