Katy Perry is all smiles as she meets and greets some of her fans on Friday June 29 in Sydney, Australia. Katy‘s documentary Katy Perry: Part of Me 3D premiered in the States on Wednesday and hits Australian theaters July 2! 27 years old most beautiful singer was a gospel singer in her childhood. In the beginning of her career she didn’t get much success but in 2010, after releasing her songs “I kissed A Girl”, “Hot N’ Cold” and “Waking Up in Vegas” became hits. Some singles from that album include “Peacock,” “California Girls” and “Teenage Dream,” all of which were successful on the radio and as digital download. Katy Perry premiered her 3D movie “Katy Perry: Part of Me” on June 26, held at the Grauman’s Chinese Theater in Los Angeles. Now take a look inside the latest picture of this gorgeous lady.