Lady Gaga starts off her international tour by reading an emotional letter to her fans, followed by the debut of 'Blade of Grass,' which she wrote for her fiancé, Michael Polansky. Katy Perry, who's ...

Katy Perry's brief stint in space was "totally crazy". The 'Firework' hitmaker - who has four-year-old daughter Daisy with fiance Orlando Bloom - joined an all-female crew on an 11-minute Blue ...