Katy Perry achieved global fame in 2008 with her second album ‘One of the Boys.’ It included smash hits ‘I Kissed a Girl’ and ‘Hot n Cold.’ She has been consistently listed in the Top-Earning Women in Music by Forbes. She has been named a UNICEF Goodwill Ambassador in 2013 and she is also publicly advocating LGBT rights. Her latest single ‘Never Really Over’ was released in May.