LOS ANGELES, CA - FEBRUARY 08: Singer Sia (R) and dancer Maddie Ziegler arrive at the 57th GRAMMY Awards at Staples Center on February 8, 2015 in Los Angeles, California. (Photo by Jon Kopaloff/FilmMagic)
LOS ANGELES, CA - FEBRUARY 08: Singer Sia (R) and dancer Maddie Ziegler arrive at the 57th GRAMMY Awards at Staples Center on February 8, 2015 in Los Angeles, California. (Photo by Jon Kopaloff/FilmMagic)