Photos: Teen Choice Awards 2015 | Show highlights

Co-hosts Josh Peck, left, Gina Rodriguez and Ludacris on stage during the Teen Choice Awards 2015 at the USC Galen Center.

Cameron Dallas of Chino, Calif., accepts the male Web star award for his Vine postings. He also won the Choice Web: Viner award.

Actors Vanessa Ray, from left, Lucy Hale, Janel Parrish, Shay Mitchell, Ashley Benson and Ian Harding accept the Choice TV: Drama Show award for ABC Family’s “Pretty Little Liars.”

Talk show host Ellen DeGeneres accepts the comedian award.

Ally Brooke, from left, Normani Kordei, Lauren Jauregui, Camila Cabello and Dinah Jane Hansen of Fifth Harmony accept the summer song award for “Worth It.”

Perrie Edwards, from left, Jade Thirlwall, Leigh-Anne Pinnock and Jesy Nelson of the group Little Mix accept the breakout artist award.

Jussie Smollett, left, and Gabourey Sidibe of the “Empire” cast perform.

Flo Rida performs “I Don’t Like It, I Love It” at the Teen Choice Awards.

Josh Hutcherson accepts the award for choice movie actor: sci-fi/fantasy for “The Hunger Games: Mockingjay-Part 1.”

Rachel Platten performs “Fight Song” at the 2015 Teen Choice Awards.

Chloe Grace Moretz accepts the award for choice movie actress: drama for “If I Stay” at the Teen Choice Awards at the Galen Center.

Jussie Smollett, left, and Bryshere Y. Gray accept the award for choice TV: breakout show for “Empire.”

Scott Eastwood, left, and Rita Ora present the award for choice movie actress: drama.

Basketball player Stephen Curry of the Golden State Warriors accepts the male athlete award.

Wiz Khalifa accepts the award for R&B/hip-hop song for “See You Again.”

Musicians Michael Clifford, left, Ashton Irwin, Luke Hemmings and Calum Hood of 5 Seconds of Summer perform during the Teen Choice Awards 2015 at USC.

Singer Britney Spears accepts the style icon award.