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Miley Cyrus issued a statement exclusively to PEOPLE on Sunday, apologizing for a series of playfully provocative foto that circulated on the Internet last week, as well as those from a racy, as-yet unreleased Vanity Fair foto shoot in which she appears to be nude.

The singer, 15, tells PEOPLE: "My goal in my Musica and my recitazione is always to make people happy. For Vanity Fair, I was so honored and thrilled to work with Annie [Leibovitz]. I took part in a foto shoot that was supposed to be 'artistic' and now, seeing the photographs and Leggere the story, I feel so embarrassed."

A source...