Singer Katy Perry poses in front of fans at the 2013 MTV Video Music Awards at the Barclays Center in Brooklyn. (Larry Busacca / Getty Images for MTV)
Exercise guru Richard Simmons greets Katy Perry. (Larry Busacca / Getty Images for MTV)
Lady Gaga. (Scott Gries / Invision/Associated Press)
Miley Cyrus. (Larry Busacca / Getty Images for MTV)
Miley Cyrus. (Jason Szenes / EPA)
Lil Kim. (Jason Szenes / EPA)
Niall Horan, left, Louis Tomlinson, Liam Payne, Zayn Malik and Harry Styles of One Direction. (Jamie McCarthy / Getty Images for MTV)
“Glee” actor Darren Criss. (Jamie McCarthy / Getty Images for MTV)
Holland Roden. (Jamie McCarthy / Getty Images for MTV)
The Weeknd. (Jamie McCarthy / Getty Images for MTV)
Singer Robin Thicke and actress Paula Patton. (Larry Busacca / Getty Images for MTV)
Cast members, from left, Drita D’Avanzo, Angela Raiola and Renee Graziano from “Mob Wives.” (Scott Gries / Invision/Associated Press)
Machine Gun Kelly. (Jamie McCarthy / Getty Images for MTV)
Rapper Busta Rhymes. (Larry Busacca / Getty Images for MTV)
Rapper Kendrick Lamar. (Jamie McCarthy / Getty Images for MTV)
Actress Melanie Iglesias. (Jason Szenes / EPA)
David Boyd, left, Louis Vecchio and Soren Hansen of the Denmark band New Politics. (Jason Szenes / EPA)
Singer Mary Lambert. (Jason Szenes / EPA)
Shannon Bex, left, Aundrea Fimbres, Aubrey O’Day and Dawn Richard of Danity Kane. (Larry Busacca / Getty Images for MTV)
Singer Ariana Grande. (Jamie McCarthy / Getty Images for MTV)
Sisters Liv Nervo, left, and Mim Nervo of the group Nervo. (Scott Gries / Invision/AP)
From left, Dinah Jane Hansen, Lauren Jauregui, Ally Brooke, Normani Kordei and Camila Cabello of the group Fifth Harmony. (Larry Busacca / Getty Images for MTV)
“Jersey Shore” star Nicole “Snooki” Polizzi with husband Jionni LaValle. (Emmanuel Dunand / AFP/Getty Images)
Model Erin Wasson. (Larry Busacca / Getty Images for MTV)
Carly Aquilino. (Larry Busacca / Getty Images for MTV)
Singer Austin Mahone. (Larry Busacca / Getty Images for MTV)
Rapper Riff Raff. (Jamie McCarthy / Getty Images for MTV)
Tionne “T-Boz” Watkins and Rozonda “Chilli” Thomas of TLC. (Larry Busacca / Getty Images for MTV)
Shannon Bex, left, Aundrea Fimbres, Aubrey O’Day and Dawn Richard of Danity Kane. (Larry Busacca / Getty Images for MTV)
“Jersey Shore” alum Sammi “Sweetheart” Giancola and Ronnie Magro. (Larry Busacca / Getty Images for MTV)
“The Spectacular Now” actor Miles Teller. (Jamie McCarthy / Getty Images for MTV)
Wiz Khalifa. (Larry Busacca / Getty Images for MTV)
Iggy Azalea. (Larry Busacca / Getty Images for MTV)
Flying Lotus. (Jason Szenes / EPA)
Rapper 2 Chainz. (Larry Busacca / Getty Images for MTV)
