Iggy Azalea at the KIIS FM’s Jingle Ball 2014 at the Staples Center on December 5, 2014 in Los Angeles, CA

Katy Perry arrives to the Kid’s Choice Awards 2013 on March 23, 2013 in Los Angeles, CA

Sabrina Carpenter at the “Planes: Fire & Rescue” World Premiere at the El Capitan Theater on July 16, 2014 in Los Angeles, CA

Rihanna arrives to the Grammy Awards 2015 on February 8, 2015 in Los Angeles, CA

Lorde gets ready to perform for a Grammy event in Los Angeles, California on January 25, 2014

Jennifer Lopez at the American Idol Season 13 Premiere Screening at Royce Hall on January 14, 2014 in Westwood, CA

Jennifer Lopez arrives to the American Idol Top 13 Finalists on February 20, 2014 in West Hollywood, CA

Becky G at the 2014 Radio Disney Music Awards held at Nokia Theatre L.A. Live in Los Angeles, California on April 26, 2014

Taylor Swift arrives at the Clive Davis and The Recording Academy annual Pre-GRAMMY Gala on January 25th 2014 at the Beverly Hilton in Beverly Hills, California

Meghan Trainor at the 103.3 KISS FM Jingle Ball 2014 at Allstate Arena in Rosemont (Red Carpet), IL on December 18, 2014