Pop star Katy Perry says that Mick Jagger hit on her when she was an 18-year-old backup singer.

Before she started selling millions of records -- like her most recent album, 'Prism,' which is No. 1 this week -- Perry was a backup singer who worked on songs by fellow pop-chart conqueror Miley Cyrus and the Rolling Stones frontman's solo material.

As she recently told NovaFM, an Australian radio station, the sixtysomething Jagger came on to her after she sang backing vocals on his 2004 single 'Old Habits Die Hard,' which was used on the soundtrack to the movie 'Alfie.'

"I actually went to dinner with him one time," Perry said on the 'Ash, Kip & Luttsy' show. "And he hit on me when I was like 18!" You can hear, and see, the interviewer here. The interview asked how she could turn down the legend. "Well, you bring a friend, and then they do them," she replied. "You sacrifice your friend."

Since then, Perry said "he's been very kind." She even joined Jagger and the Stones onstage, performing 'Beast of Burden' with them in May when their 50th-anniversary tour stopped in Las Vegas.