Singer Katy Perry arrives.
Katy Perry poses for photographers after winning the video of the year award for Firework.
Lady Gaga performs You and I.
Beyonce shows her baby bump after performing Love On Top. The singer and her husband, rapper Jay-Z, are expecting their first child next spring.
Justin Bieber accepts the award for best male video for U Smile.
A close-up view of singer Justin Bieber's hand as he arrives holding a snake.
Rapper Whiz Khalifa kisses model Amber Rose as they arrive.
Singer Nicki Manaj.
Lil Wayne performs on stage.
Britney Spears accepts the best pop video award for Till the World Ends.
Bruno Mars performs during a tribute to late singer Amy Winehouse.