爱华网Paul McCartney, from left, Rihanna, and Kanye West perform at the 57th annual Grammy Awards on Sunday, February 8, 2015, in Los Angeles. (Photo by John Shearer/Invision/AP Photo)
Lady Gaga arrives at the 57th annual Grammy Awards at the Staples Center on Sunday, February 8, 2015, in Los Angeles. (Photo by Jordan Strauss/Invision/AP Photo)
Madonna performs at the 57th annual Grammy Awards on Sunday, February 8, 2015, in Los Angeles. (Photo by John Shearer/Invision/AP Photo)
Zendaya seen at the Universal Music Group 2015 Grammy After Party presented by America Airlines and Citi held at The Ace Hotel on Sunday, February 8, 2015, in Los Angeles. (Photo by Eric Charbonneau/Invision for Universal Music Group/AP Images)
Beyonce arrives at the 57th annual Grammy Awards at the Staples Center on Sunday, February 8, 2015, in Los Angeles. (Photo by Jordan Strauss/Invision/AP Photo)
Kim Kardashian, left and Kanye West arrive at the 57th annual Grammy Awards at the Staples Center on Sunday, February 8, 2015, in Los Angeles. (Photo by Jordan Strauss/Invision/AP Photo)
Rihanna arrives at the 57th annual Grammy Awards at the Staples Center on Sunday, February 8, 2015, in Los Angeles. (Photo by Jordan Strauss/Invision/AP Photo)
Sophie Simmons and Nick Simmons seen at the Universal Music Group 2015 Grammy After Party presented by America Airlines and Citi held at The Ace Hotel on Sunday, February 8, 2015, in Los Angeles. (Photo by Eric Charbonneau/Invision for Universal Music Group/AP Images)
TV personality Rocsi Diaz arrives at the 57th annual Grammy Awards in Los Angeles, California February 8, 2015. (Photo by Mario Anzuoni/Reuters)
Hilary Hahn and Cory Smythe pose with their award for best chamber music/small ensemble performance for “In 27 Pieces – The Hilary Hahn Encores” backstage at the 57th annual Grammy Awards in Los Angeles, California February 8, 2015. (Photo by Mike Blake/Reuters)
Singer Bonnie McKee arrives at the 57th annual Grammy Awards in Los Angeles, California February 8, 2015. (Photo by Mario Anzuoni/Reuters)
Actress Pauley Perrette arrives at the 57th annual Grammy Awards in Los Angeles, California February 8, 2015. (Photo by Mario Anzuoni/Reuters)
Singer Jessie J arrives at the 57th annual Grammy Awards in Los Angeles, California February 8, 2015. (Photo by Mario Anzuoni/Reuters)
Singer Miley Cyrus arrives at the 57th annual Grammy Awards in Los Angeles, California February 8, 2015. (Photo by Mario Anzuoni/Reuters)
Beyonce performs “Take My Hand” at the 57th annual Grammy Awards in Los Angeles, California February 8, 2015. (Photo by Lucy Nicholson/Reuters)
Kristen Wiig (2nd L) and Maddie Ziegler (2nd R) dance to Sia's “Chandelier” as the artist (R) stands with her back to the audience while performing at the 57th annual Grammy Awards in Los Angeles, California, February 8, 2015. (Photo by Lucy Nicholson/Reuters)
Big Sean, left, and Ariana Grande arrive at the 57th annual Grammy Awards at the Staples Center on Sunday, February 8, 2015, in Los Angeles. (Photo by Jordan Strauss/Invision/AP Photo)
Kanye West, left, and Kim Kardashian arrive at the 57th annual Grammy Awards at the Staples Center on Sunday, February 8, 2015, in Los Angeles. (Photo by Jordan Strauss/Invision/AP Photo)
Madonna arrives at the 57th annual Grammy Awards at the Staples Center on Sunday, February 8, 2015, in Los Angeles. (Photo by Jordan Strauss/Invision/AP Photo)
Recording Artists Jhene Aiko and Ariana Grande attend The 57th Annual GRAMMY Awards at the STAPLES Center on February 8, 2015 in Los Angeles, California. (Photo by Larry Busacca/Getty Images for NARAS)
Kat Graham arrives at the 57th annual Grammy Awards at the Staples Center on Sunday, February 8, 2015, in Los Angeles. (Photo by Jordan Strauss/Invision/AP Photo)
Dancer Maddie Ziegler and singer/songwriter Sia attend The 57th Annual GRAMMY Awards at the STAPLES Center on February 8, 2015 in Los Angeles, California. (Photo by Larry Busacca/Getty Images for NARAS)
Recording Artist Ciara attends The 57th Annual GRAMMY Awards at the STAPLES Center on February 8, 2015 in Los Angeles, California. (Photo by Larry Busacca/Getty Images for NARAS)
Rapper Nicki Minaj attends The 57th Annual GRAMMY Awards at the STAPLES Center on February 8, 2015 in Los Angeles, California. (Photo by Jason Merritt/Getty Images)
Actress Anna Kendrick attends The 57th Annual GRAMMY Awards at the STAPLES Center on February 8, 2015 in Los Angeles, California. (Photo by Larry Busacca/Getty Images for NARAS)
Singer Rita Ora attends The 57th Annual GRAMMY Awards at the STAPLES Center on February 8, 2015 in Los Angeles, California. (Photo by Jason Merritt/Getty Images)
Singer Ashanti attends The 57th Annual GRAMMY Awards at the STAPLES Center on February 8, 2015 in Los Angeles, California. (Photo by Jason Merritt/Getty Images)
TV Personality Kim Kardashian attends The 57th Annual GRAMMY Awards at the STAPLES Center on February 8, 2015 in Los Angeles, California. (Photo by Larry Busacca/Getty Images for NARAS)
Actress Nicole Kidman attends The 57th Annual GRAMMY Awards at the STAPLES Center on February 8, 2015 in Los Angeles, California. (Photo by Jason Merritt/Getty Images)
Abigail Anderson and recording artist Taylor Swift attend The 57th Annual GRAMMY Awards at the STAPLES Center on February 8, 2015 in Los Angeles, California. (Photo by Larry Busacca/Getty Images for NARAS)
Actress Bleona Qereti attends The 57th Annual GRAMMY Awards at the STAPLES Center on February 8, 2015 in Los Angeles, California. (Photo by Larry Busacca/Getty Images for NARAS)
Gwen Stefani arrives at the 57th annual Grammy Awards at the Staples Center on Sunday, February 8, 2015, in Los Angeles. (Photo by Jordan Strauss/Invision/AP Photo)
Taylor Swift arrives at the 57th annual Grammy Awards at the Staples Center on Sunday, February 8, 2015, in Los Angeles. (Photo by Jordan Strauss/Invision/AP Photo)
Katy Perry arrives at the 57th annual Grammy Awards at the Staples Center on Sunday, February 8, 2015, in Los Angeles. (Photo by Jordan Strauss/Invision/AP Photo)
Joy Villa arrives at the 57th annual Grammy Awards at the Staples Center on Sunday, February 8, 2015, in Los Angeles. (Photo by Jordan Strauss/Invision/AP Photo)
Kaya Jones arrives for the 57th annual Grammy Awards held at the Staples Center in Los Angeles, California, USA, 08 February 2015. (Photo by Michael Nelson/EPA)
Nicki Minaj arrives at the 57th annual Grammy Awards at the Staples Center on Sunday, February 8, 2015, in Los Angeles. (Photo by Jordan Strauss/Invision/AP Photo)
Charli XCX arrives at the 57th annual Grammy Awards at the Staples Center on Sunday, February 8, 2015, in Los Angeles. (Photo by Jordan Strauss/Invision/AP Photo)
Chrissy Teigen arrives at the 57th annual Grammy Awards at the Staples Center on Sunday, February 8, 2015, in Los Angeles. (Photo by Jordan Strauss/Invision/AP Photo)
Jeannie Mai arrives at the 57th annual Grammy Awards at the Staples Center on Sunday, February 8, 2015, in Los Angeles. (Photo by Jordan Strauss/Invision/AP Photo)
