Bella Thorne

(credit: Jason Merritt/Getty Images)

Flo Rida

(credit: Kevin Winter/Getty Images)

Carly Rae Jepsen

(credit: Kevin Winter/Getty Images)

Chelsea Kane

(credit: Jason Merritt/Getty Images)

Chris Colfer and Victoria Justice

(credit: Kevin Winter/Getty Images

Chris Hemsworth

(credit: Kevin Winter/Getty Images)

Darren Criss

(credit: Jason Merritt/Getty Images)

Demi Lovato and Kevin McHale

(credit: Kevin Winter/Getty Images)

Demi Lovato

(credit: Kevin Winter/Getty Images)

Ellen Degeneres and Portia de Rossi

(credit: Jason Merritt/Getty Images)

Ellen DeGeneres with Rosie McClelland and Sophia Grace Brownlee

(credit: Kevin Winter/Getty Images)

Gwen Stefani

(credit: Kevin Winter/Getty Images)

Hayden Panettiere

(credit: Jason Merritt/Getty Images)

Jonah Hill

(credit: Kevin Winter/Getty Images)

Nikki Reed

(credit: Jason Merritt/Getty Images)

Justin Bieber

(credit: Kevin Winter/Getty Images)

Justin Bieber

(credit: Kevin Winter/Getty Images)

Kendall Jenner and Kylie Jenner

(credit: Jason Merritt/Getty Images)

Lea Michele and Tyler Posey

(credit: Kevin Winter/Getty Images)

Lucy Hale

(credit: Jason Merritt/Getty Images)

Miranda Cosgrove

(credit: Kevin Winter/Getty Images)

Adrian Young, Gwen Stefani and Tony Ashwin Kanal of No Doubt

(credit: Jason Merritt/Getty Images)

Pauly D

(credit: Kevin Winter/Getty Images)

Pauly D

(credit: Jason Merritt/Getty Images)

Rebecca Black

(credit: Jason Merritt/Getty Images)

Rico Rodriguez and Raini Rodriguez

(credit: Jason Merritt/Getty Images)

Rosie McClelland

(credit: Kevin Winter/Getty Images)

Selena Gomez

(credit: Kevin Winter/Getty Images)

Sophia Grace Brownlee

(credit: Kevin Winter/Getty Images)

Taylor Lautner, Kristen Stewart, and Robert Pattinson

(credit: Kevin Winter/Getty Images)

Taylor Swift

(credit: Kevin Winter/Getty Images)

Paul Wesley, Nina Dobrev, Ian Somerhalder and Kat Graham

(credit: Jason Merritt/Getty Images)

Will.i.am

(credit: Jason Merritt/Getty Images)

Zac Efron

(credit: Kevin Winter/Getty Images)

Zoe Saldana

(credit: Jason Merritt/Getty Images)

Zooey Deschanel

(credit: Jason Merritt/Getty Images)