Mick Jagger says he never hit on Katy Perry when she was 18. During an interview with an Australian radio show this week, Katy said she sang backing vocals for Jagger's 2004 song 'Old Habits Die Hard'. She said she had dinner with the veteran rocker and that "he hit on me when I was 18." In a statement Thursday, a representative for Jagger says he "categorically denies that he has ever made a pass at Katy Perry." The rep adds: "Perhaps she is confusing him with someone else." Perry was one of the singers to make a guest appearance on the Rolling Stones' tour this year. The 29-year-old singer also said in the interview that the 70-year-old Jagger has been "very kind" to her.