Celebrities arrive at the 41st American Music Awards in Los Angeles, California November 24, 2013.
Celebrities arrive at the 2013 MTV Europe Music Awards in Amsterdam November 10, 2013.
Katy Perry and John Mayer's friends want them to get engaged and predict he will propose to her very soon.
Katy Perry and comedian Will Ferrell's fictional news anchor Ron Burgundy will lead stars performing and appearing at the MTV Europe Music Awards.
Son Ye-Jin attends her recent film 'The Accomplice' stage greeting on October 27, 2013 in Seoul, South Korea.
American singer Katy Perry has secured her fourth number one in the British singles chart with her latest release "Roar", sales figures showed.
Cast members pose at the premiere of the film "The Smurfs 2" at the Regency Village theatre in Los Angeles, California July 28, 2013.
Celebrities watch match between the Los Angeles Lakers and the Dallas Mavericks in Los Angeles, October 30, 2012.
Katy Perry poses during a photocall before the premiere of "Katy Perry: Part of Me".
Katy Perry performs at the premiere of "Katy Perry: Part of Me".
Singer Katy Perry attend the Echo Music Awards ceremony in Berlin March 22, 2012. Established in 1992, the German Phonographic Academy honors national and international artists with the Echo German music prize.
Blake Lively films a scene for "Gossip Girl" on February 29, 2012 in New York City.