Description: Singer Katy Perry was spotted last night at the annual ASCAP Pop Music Awards in Hollywood, California, looking stunning in a floor-length white dress. Katy Perry opted for a beautiful floor length white gown covered in sparkling gems, which she teamed with beige high heels and a string of pearls wrapped around her wrist. The diva made sure the look was anything from bland by sporting a deep purple hair-do and dainty head band.